is a high-power PWM signal generator and motor driver capable of directly driving loads up to (150W). Its standout feature is its
, which allows it to function as both a standard speed controller and a precise pulse sequencer. AliExpress Key Features & Capabilities Dual Operating Modes
: Provides continuous frequency control (1Hz to 150KHz) and duty cycle adjustment (0–100%) for tasks like motor speed regulation or LED dimming. PULSE Mode
: Allows for complex sequencing by setting specific positive/negative pulse widths, power-on delay times, and a specific number of pulses (1–9999 or infinite). High Power Output
: Unlike standard signal generators, this module can handle up to
of current, making it suitable for directly powering motors, solenoid valves, and high-brightness LEDs without an external relay or driver. Safety & Reliability : Includes reverse polarity protection to prevent damage from incorrect wiring and power-down memory to retain your settings after a restart. User Interface : Features a high-definition LCD display
and physical start/stop buttons for real-time control and monitoring. AliExpress Technical Specifications Specification Working Voltage DC 3.3V – 30V Frequency Range 1Hz – 150KHz (±2% accuracy) Output Current Pulse Number 1 – 9999 or Infinite Delay Time 0.000s – 9999s Common Use Cases Motor Speed Regulation : Precise control of DC motor rotation speeds. Automated Testing
: Generating specific pulse sequences to test the reliability of actuators or solenoid valves. LED Dimming : High-frequency PWM for flicker-free brightness control. DIY Electronics
: Serving as a square wave signal source for MCU development or experimental setups. AliExpress For more technical details, you can refer to the ZK-PP2K Technical Manual or explore product listings on retailers like AliExpress switch between PWM and PULSE modes
The is a high-power dual-mode signal generator capable of driving loads up to 8A directly, such as motors, LEDs, or solenoids. Key Specifications
Operating Voltage: DC 3.3V–30V with anti-reverse protection. Frequency Range: 1Hz to 150KHz.
Load Capacity: Up to 8A (approximately 150W at higher voltages). Display: LCD high-definition screen. Operating Modes
You can switch between two primary modes at any time. Detailed manuals are available from Ledsales and Supereyes. 1. PWM Mode (Indicated by "%" on screen)
This mode provides a continuous square wave signal for controlling speed or brightness.
Adjustments: Use FREQ+ / FREQ- to set frequency and DUTY+ / DUTY- for duty cycle (0–100%).
Application: Ideal for standard motor speed regulation or LED dimming. 2. PULSE Mode (Adjustable pulse counts)
This mode allows precise control over pulse width, delay, and the specific number of cycles. ZK-PP2K Signal Generator
The ZK-PP2K is a high-power dual-mode signal generator capable of directly driving loads up to 8A (150W), such as DC motors, solenoid valves, and LED lights. It operates within a voltage range of 3.3V to 30V DC. Essential Operating Modes
You can switch between these two modes by long-pressing the "SET" button (about 6 seconds) until the "%" symbol appears or disappears. PWM Mode (Continuous): Display: Shows a "%" symbol. Adjustments: Frequency and Duty Cycle.
Usage: Best for continuous speed control (motors) or dimming (LEDs). PULSE Mode (Specific Count): Display: No "%" symbol.
Adjustments: Positive/negative pulse width, delay time, and total pulse number (set to ---- for infinite).
Usage: Ideal for precise control of solenoid valve cycles or stepper motor steps. Key Setup Steps
Power Connection: Connect a DC power supply (3.3V–30V) to the input terminals. Do not use AC power.
Mode Selection: Use the "SET" button to toggle between PWM and PULSE modes.
Parameter Setting: Use the FREQ+ / FREQ- and DUTY+ / DUTY- buttons to adjust values.
Output Activation: Press the ON button to start the signal. The screen will display "OUT" when active. Helpful Resources & Documentation
For a deep dive into wiring and specific settings, you can refer to the PWM & Pulse Signal Generator User's Manual provided by ledsales.com.au. If you are looking for technical community insights, Hackster.io features a detailed project breakdown of the ZK-PP2K.
You can also find technical diagrams and summaries at these locations: View the ZK-PP2K User Manual from Суперайс. Download the ZK-PP2K PWM Controller PDF from gotronik.
Check the product specifications and customer reviews on Amazon.ca.
Are you planning to use this for motor speed control or solenoid valve timing?
The ZK-PP2K is a dual-mode (PWM and Pulse) signal generator and motor driver module operating at 3.3V–30V, capable of driving loads up to 8A (150W) for motor, valve, or LED control. It features an LCD display, a MOS switch output, and precise control over frequency (1Hz–150kHz) and duty cycle (0–100%). For the full, original technical manual, visit ledsales.com.au ledsales.com.au
ZK-PP2K Manual: A Comprehensive Guide
Introduction
The ZK-PP2K is a cutting-edge material handling equipment designed for efficient and safe transportation of goods. This manual provides an in-depth guide on the operation, maintenance, and troubleshooting of the ZK-PP2K.
Key Features
Operating Instructions
Maintenance and Troubleshooting
Safety Precautions
Technical Specifications
Conclusion
The ZK-PP2K is a reliable and efficient material handling solution. By following this manual, operators can ensure safe and optimal use of the equipment.
Appendix
In the low hum of a server room beneath a rainy city, an engineer named Mara found an old note tucked into a dusty box of hardware labeled Zk-pp2k. The paper was brittle, the ink faded, but along the margin someone had written: "Manual inside the story." Curious, Mara carried the box to her desk and booted the solitary terminal.
The first line on the screen read like an invocation: "Zk-pp2k — zero-knowledge proof protocol, phase two, keyring." It was technical and poetic at once, as if the device itself had chosen words to hide a secret. Mara read on. Zk-pp2k Manual
Chapter 1 — The Promise Zk-pp2k was born in an age when trust had become a scarce commodity. Nations and companies hoarded ledgers; people's identities were entangled with countless services. Then a small collective of mathematicians and coders dreamed up a way to prove truth without revealing it. The protocol's promise was simple: prove you know without showing what you know.
Chapter 2 — The Mechanism The manual described rituals — commits, challenges, responses — that danced like a courtship between prover and verifier. Mara imagined each step as characters in a play:
The manual mapped these theatrics to algebra: elliptic curves, polynomial commitments, and succinct proofs. It named optimizations that made the dance swift — batching, recursive composition, and a trick called "phase two keying" that let many performances reuse the same prop without compromising safety.
Chapter 3 — Guardians of the Keys At the heart of Zk-pp2k lay a key ceremony. The manual turned this into a mythic rite: several guardians gather in a sterile room. Each adds a secret entropy shard, mixes it with the others, and then destroys their copy. The ceremony's purpose was practical — to prevent any single person from forging proofs — but the manual framed it as an oath: "We bind ourselves to the protocol so that truths may be verified, and lies may not masquerade as proofs."
Mara pictured the guardians as librarians who, instead of shelving books, scattered seeds of randomness into a bowl that would bloom into a public parameter set. The manual emphasized audits, reproducible logs, and tamper-evident hardware: the modern equivalent of seals and wax.
Chapter 4 — Failure Modes Every manual humbly warns of what could go wrong. Zk-pp2k listed dangers plainly: flawed randomness, software bugs, side-channel leaks, and social engineering. The narrative shifted to a detective story — investigators chasing a faint trail of timing differences, coaxing a confession from a misbehaving RNG, dissecting a compiler's optimisation that had silently rewritten a proof step.
Mara felt the tension: the protocol was elegant, but fragile in the messy real world. The document urged continuous testing, multi-party verification, and a culture that treated ceremony and code equally.
Chapter 5 — Use Cases The manual's final chapters read like a travelogue. Zk-pp2k appeared at borderless markets where participants traded without revealing balances. It authenticated identities for services that valued privacy. It allowed researchers to audit datasets without exposing individual records. Each vignette illustrated how the protocol, when applied thoughtfully, preserved dignity and autonomy.
Epilogue — The Living Manual At the end, the manual admitted something almost human: protocols live in people as much as in math. Updates, community debates, and the slow hardening of practice were part of its life. The last sentence was a quiet instruction: "Guard the keys, test the proofs, teach the next generation."
Mara closed the terminal and looked at the box. The rain had stopped. She picked up the shard of hardware and, in the margins of her own notebook, began to sketch a plan: host a ceremony, write tests, invite collaborators. The manual had done more than explain a protocol; it had given her a story to live.
She titled her notes Zk-pp2k Manual — and for the first time in weeks, felt the tidy lift of purpose that comes from holding a map and knowing where to begin.
The Ultimate Guide to the ZK-PP2K Signal Generator: A Comprehensive Manual
The ZK-PP2K has become a staple for hobbyists, automotive technicians, and electronics engineers alike. This versatile dual-mode signal generator offers precise control over PWM (Pulse Width Modulation) and pulse generation, making it ideal for everything from LED dimming to motor speed control and solenoid testing.
If you’ve lost your paper manual or find the Chinese-to-English translations a bit confusing, this guide serves as your definitive ZK-PP2K manual. 1. Technical Specifications
Before diving into operation, ensure your environment matches the device’s limits: Working Voltage: DC 3.3V - 30V Frequency Range: 1Hz - 150KHz Duty Cycle Range: 0 - 100% Number of Pulses: 1 - 9999, or Infinite (----) Delay Output Time: 0.000s - 9999s Output Current: Max 8A (MOS switch tube) Output Amplitude: Equal to the input voltage 2. Interface and Controls
The ZK-PP2K features a high-contrast LCD and three primary physical controls:
Digital Encoder (Knob): Used for adjusting values. Rotate to change numbers; press to switch between digits or settings.
ON/OFF Button: Short press to enable/disable the output. Long press to enter the setup menu.
SET Button: Short press to toggle between parameters (Frequency, Duty Cycle, etc.). 3. Operational Modes
The device operates in two distinct modes. You can toggle between them by long-pressing the SET button (approx. 2 seconds). Mode 1: PWM Mode (Display: "%") In this mode, the device outputs a continuous square wave.
Frequency Setting: Adjust the frequency (Hz) to match your application (e.g., 20kHz for motor control to avoid audible whine).
Duty Cycle Setting: Adjust the percentage (0-100%) to control the power delivery.
Use Case: Dimming lights, controlling DC motor speeds, or testing ESCs. Mode 2: PULSE Mode (Display: No "%") This mode is for precise timing and triggered events. P+ (Positive Pulse Width): Time the signal stays High. P- (Negative Pulse Width): Time the signal stays Low.
Delay (Time Delay): The wait time after hitting "ON" before the pulses begin. Number (Pulse Count): Set exactly how many pulses to fire.
Use Case: Fuel injector testing, stepper motor stepping, or automated shutter triggers. 4. Advanced Settings (The Setup Menu)
To enter the system settings, long-press the ON/OFF button. Here you can configure:
Output State on Power-Up: Choose whether the device starts "ON" or "OFF" when it receives power.
Signal Polarity: Invert the High/Low logic if your circuit requires it. 5. Wiring Diagram and Safety The ZK-PP2K acts as a High-Side Switch.
VIN+ / VIN-: Connect your DC power source here (3.3V - 30V). OUT+ / OUT-: Connect your load (Motor, LED, Solenoid) here.
Important: Because it uses a MOS tube output, the output voltage will be the same as your input voltage. Do not power the device with 24V if your load is only rated for 5V. 6. Troubleshooting Common Issues
No Output: Check if the "ON" indicator is visible on the LCD. Ensure your input voltage is within the 3.3V-30V range.
Device Reboots: This usually happens when driving an inductive load (like a large motor) without a flyback diode, causing back-EMF to interference with the chip.
Display is Dim: Check if your power supply is sagging under load.
The ZK-PP2K is a "Swiss Army Knife" for pulse generation. By mastering the toggle between PWM and Pulse modes, you can replace much more expensive benchtop equipment for most DIY and repair tasks.
Are you planning to use the ZK-PP2K for motor speed control or for testing automotive components like fuel injectors?
Here’s a professional post you can use on a forum, support site, or internal knowledge base for the Zk-pp2k Manual.
Title: 📘 ZK-PP2K Manual – User Guide & Setup Instructions
Post:
I’m looking for (or sharing) the official Zk-pp2k Manual – the comprehensive user guide for the ZK-PP2K controller/programming keypad.
If you have a copy, please ensure it includes:
📎 Download link (if available):
[Insert link to PDF or attach file here]
⚠️ Common troubleshooting notes for PP2K:
1234 or 0000 – change immediately after installation.If you are missing the manual, contact ZK Support directly or check their legacy product section at www.zkteco.com. is a high-power PWM signal generator and motor
Let me know if you need help locating a specific section of the Zk-pp2k Manual.
The ZK-PP2K PWM Signal Generator Go to product viewer dialog for this item.
is a versatile and high-power module frequently used for motor speed control, LED dimming, and precision signal testing. Below is a draft review based on technical specifications and user experiences. Product Overview The
is a dual-mode signal generator capable of outputting up to 8A of current, making it powerful enough to drive loads like DC motors, solenoid valves, and high-brightness LEDs directly. It operates on a wide voltage range of 3.3V to 30V and features a high-definition LCD for real-time monitoring of frequency and duty cycle. Key Strengths
is a versatile signal generator designed to provide precise electrical control for various components like DC motors, LEDs, and solenoid valves
. It is particularly useful for engineers and hobbyists who need to simulate different electrical conditions or regulate hardware performance. Technical Overview The module operates on a wide input voltage range of 3.3V to 30V
. Its most significant feature is the high current output of up to
, which allows it to directly drive high-power devices without the need for an external amplifier. Operational Modes
The ZK-PP2K manual highlights two primary modes of operation, which can be toggled by holding the "SET" button for several seconds: zk-pp2k-sterownik-pwm.pdf - gotronik
The ZK-PP2K PWM Signal Generator is a versatile 8A driver module designed to provide electrical signals across a broad spectrum of frequencies for both professional and DIY electronic projects. Its primary function is to generate square wave and pulse signals to directly drive high-power loads like motors, LEDs, and solenoid valves without the need for additional drivers. Technical Specifications
According to the ZK-PP2K Manual, the device operates within a wide voltage range and offers high precision for fine-tuning output. Operating Voltage: DC 3.3V–30V with reverse protection.
Current Capacity: Maximum output current of 8A (approximately 150W). Frequency Range: 1Hz to 150KHz with an accuracy of 2%. Duty Cycle: Adjustable from 0.00% to 100% in 1% steps.
Pulse Management: Adjustable pulse counts from 1 to 9,999 or infinite ("----"). Operational Modes
The device features a dual-mode interface toggled by holding the "SET" button for approximately 6 seconds.
PWM Mode: Displayed with a "%" symbol, this mode allows for continuous signal generation. Users can adjust the frequency and duty cycle to control motor speeds or LED brightness.
PULSE Mode: Indicated when the "%" symbol is absent, this mode allows for discrete control. It is used to set specific positive and negative pulse widths, delay start times, and a set number of pulses for automated cycles. Practical Applications Common use cases for the ZK-PP2K include: Motor Control: Adjusting the speed of DC or stepper motors. Lighting: Dimming high-power LED arrays.
Automation: Cycling solenoid valves for reliability or fatigue testing.
Project Prototyping: Generating signal sources for Arduino or STM systems. Steps for Use zk-pp2k-sterownik-pwm.pdf - gotronik
A very specific topic!
ZK-PP2K is a manual on Zero-Knowledge Proof (ZKP) based Private Prescription Processing for Pharmacy and Patient confidentiality. Here are some features that I was able to find:
Overview The ZK-PP2K manual describes a system that enables pharmacies to process prescriptions while maintaining patient confidentiality. The system uses zero-knowledge proofs to ensure that the pharmacy can verify the prescription without learning any sensitive information about the patient.
Key Features:
Technical Features:
Benefits:
While this guide covers 95% of typical use cases, you may want the official PDF for wiring diagrams or regulatory certifications.
www.zkteco.com, navigate to Support > Download Center > Product Manuals and search “PP2K” or “ZK-PP2K”.If the manual is not available for free, beware of third-party websites charging for it – ZKTeco distributes manuals freely.
Some variants include an internal relay for door locks. The manual wiring diagram shows:
"ZK-PP2K" manual filetype:pdfZK-PP2K user guideIf you can tell me what the label on your device says (voltage, any logo, number of pins/buttons), I can help identify the exact clone or version and find the correct manual link.
The ZK-PP2K is a high-power, dual-mode PWM and pulse signal generator designed to drive loads like DC motors, LEDs, and solenoid valves directly. Supporting a wide voltage range of 3.3V to 30V and up to 8A of current, it is a versatile tool for both industrial testing and hobbyist DIY projects. 1. Key Specifications Operating Voltage: 3.3V – 30V DC. Frequency Range: 1Hz – 150KHz (±2% accuracy). Duty Cycle Range: 0% – 100% (1% steps). Maximum Output Current: 8A. Pulse Count: 1 – 9999 or Infinite (----). Time Accuracy: 1ms. Display: High-definition LCD with status indicators. 2. Operating Modes
The ZK-PP2K features two distinct modes. To switch between them, long-press the 'SET' button for 6 seconds. PWM Mode (Standard) Identification: The screen displays a "%" symbol.
Primary Controls: Adjusts a continuous square wave via Frequency and Duty Cycle. Buttons: FREQ+ / FREQ-: Adjust output frequency. DUTY+ / DUTY-: Adjust the duty cycle percentage (0-100%). ON: Enables or disables the output. PULSE Mode
Maximum 8A (capable of directly driving motors or LED strips). Pulse Count: Adjustable from 1 to 9999, or set to infinite ( 2. Dual Operating Modes You can switch between these two modes by long-pressing the button for 2 seconds. PWM Mode (Display shows "%") Used for continuous speed control or dimming. Frequency: Set the oscillation speed (e.g., 20KHz). Duty Cycle: Controls the "On" time vs. total period (e.g., 60%). Pulse Mode (No "%" on display) Used for precise control of motor steps or timed bursts. Positive Pulse Width ( Duration the signal is HIGH. Negative Pulse Width ( Duration the signal is LOW. Pulse Number: The exact number of pulses to send before stopping. Delay Start: Sets a timer before the pulse sequence begins. 3. Button Functions & Settings ON/OFF Button:
Short press to start or stop the signal output. Long press to enter a low-power "sleep" mode. SET Button:
Short press to cycle through adjustable parameters (Frequency, Duty Cycle, etc.). Long press to switch between PWM and Pulse modes. UP/DOWN Buttons:
Increase or decrease the value of the currently selected parameter. 4. Basic Wiring Guide Power Input: Connect your power source (3.3V–30V) to the terminals. Load Connection: Connect your device (motor, valve, LED) to the terminals. Signal Warning:
Ensure the load does not exceed 8A. For inductive loads like large motors, ensure back-EMF protection is considered, though the module is designed for direct drive. 5. Practical Example: Driving a DC Motor To run a motor at 20KHz with 60% speed: Long press symbol appears (PWM Mode). Adjust the frequency to Adjust the duty cycle to to start the motor. wiring diagram
description for a certain type of motor or a guide on setting precise pulse counts
Title: The ZK-PP2K Manual Author: [Your Name/AI]
The rain in Sector 4 didn't wash things clean; it just made the grime slicker. Elias wiped a grease-stained sleeve across his forehead, leaving a dark smear. He stared at the object on his workbench.
It was a masterpiece of industrial cruelty. Matte black finish, polymer grip roughened for a hand that might be shaking, and a barrel that looked thick enough to punch through the hull of a shuttle. Stamped on the side, in faded white stencil, was the model designation: ZK-PP2K.
Elias had fixed railguns, repaired sentient drones, and once, in a desperate pinch, hotwired a city-bus with a paperclip and a prayer. But he had never seen a PP2K up close. They were legends. The "Pocket-Pounder," the street docs called them. Illegal in twelve star systems. Rare everywhere.
And he didn't have a clue how to put it back together.
He had taken it apart four hours ago. The disassembly had been easy—too easy. The gun practically fell apart when you tugged the slide. It was the reassembly that was the nightmare. Springs the size of eyelashes, pins that seemed to phase out of existence when he looked away, and a firing mechanism that defied the laws of physics. High-Capacity Load Handling : The ZK-PP2K is designed
Now, a pile of suspiciously gun-shaped metal sat in a tray, mocking him.
"Come on," Elias muttered, reaching for the trigger assembly. "You go here. You must go here."
He squeezed. Snap.
"Ow!" He recoiled, shaking his hand. A tiny, razor-sharp retaining pin had snapped back, slicing his thumb. "You little monster."
A shadow fell over the workbench.
"Having trouble, Fixer?"
Elias didn't look up. He knew that voice. It was Kael, the client. The man who owned the ZK-PP2K and wanted it cleaned, oiled, and reassembled by 0800 hours. It was currently 0745.
"Just running diagnostics," Elias lied, his voice steady despite the panic rising in his chest. "The harmonic balancer on the recoil spring was... oscillating."
Kael stepped closer. He was a tall man, built of sharp angles and cold eyes. He placed a hand on the counter. "The ZK-PP2K doesn't have a harmonic balancer. It’s a kinetic impact weapon. Old tech. Brute force."
Elias finally looked up. "I know that. I was speaking metaphorically."
Kael stared at the pile of parts. He stared at Elias’s bleeding thumb. He sighed, a sound like wind through a tombstone. "Do you know why the PP2K is the best sidearm ever made, Elias?"
"Because it kills people efficiently?"
Kael reached into his trench coat. Elias flinched, expecting a weapon. Instead, Kael pulled out a small, crumpled data-chip. He tossed it onto the workbench.
"Because," Kael said, "it was designed by sadists. It requires a specific sequence to arm the firing pin. If you get it wrong, the chamber seals shut. Forever."
Elias looked at the data-chip. "What's this?"
"The Manual," Kael said dryly. "I found it in the previous owner's pocket. I thought I’d see if you could figure it out on your own. I see I overestimated you."
Elias grabbed the chip and jammed it into his desk reader. A holographic display flickered to life. It wasn't a fancy 3D schematic. It was a simple, text-based scroll file. Yellow text on a blue background.
MANUAL: ZK-PP2K KINETIC PISTOL (REV. 4.2) WARNING: IMPROPER ASSEMBLY MAY RESULT IN CATASTROPHIC FAILURE.
Elias scrolled frantically. Step 1: Depress the grip safety. Step 2: Rotate the barrel bushing 45 degrees counter-clockwise. Step 3: DO NOT REMOVE THE RECOIL SPRING GUIDE YET.
Elias froze. He looked at the tray. The recoil spring guide was sitting next to the firing pin. He had removed it first.
"Ah," Elias said.
"You ignored the cardinal rule," Kael murmured. "You took it apart without looking at the map."
"I didn't have the map," Elias grunted, reading ahead. The manual was brutally specific. It required a tool—specifically, a 4mm pin punch—to hold the sear in place while the slide was reattached.
"I don't have a 4mm punch," Elias said, looking up. "I have a 3mm and a 5mm."
Kael smiled. It wasn't a nice smile. "Then I suggest you improvise. You have ten minutes."
Elias looked at the manual again. There was a footnote in red text at the bottom of the page: NOTE: In the absence of standard tooling, the tip of a standard .40 caliber round can be used to depress the sear mechanism.
Elias blinked. He reached into the "scrap" bin on his bench—a bucket of unlive ammo casings and broken links. He fished out a heavy, blunt-nosed bullet casing. He checked the headstamp. .40 caliber.
"You're kidding," he whispered. "It's designed to be fixed with its own ammo?"
Kael checked his watch. "Eight minutes, Fixer."
Elias moved. He stopped thinking and started obeying the text. He realigned the barrel link. He dropped the slide onto the frame, but stopped halfway. He took the bullet casing, turned it upside down, and used the brass rim to push down a tiny, spring-loaded catch inside the frame.
Click.
A sound of metal locking into metal. The sound of perfection.
He held his breath and racked the slide. It moved with the smoothness of oiled glass. It snapped forward with a satisfying, heavy clack.
He ejected the magazine, checked the feed ramp, and slammed it back home. He flipped the safety off, then on. The lever clicked crisply.
"Done," Elias said, placing the weapon on the table.
Kael picked it up. He checked the chamber. He sighted down the barrel, aiming at a rusted ventilation pipe across the room. He pulled the slide back one last time and let it snap forward.
"The harmonic balancer?" Kael asked.
"Fixed," Elias said. "Tightened it right up."
Kael holstered the weapon. He placed a credit chip on the table, double the agreed amount. "For the manual. You can keep the file. I have a feeling you’ll be seeing more of these."
Elias watched the client walk out into the slick, gray rain. He looked back at the glowing blue screen of the reader. He scrolled to the very last page of the ZK-PP2K Manual.
It read: TROUBLESHOOTING: Q: The weapon fires but the target does not fall. A: You missed. Aim better.
Elias snorted and closed the file. It was a manual written for soldiers, not mechanics. Brutal, simple, and impossible to argue with. Just like the gun.
He wiped the grease from his hands, picked up the .40 caliber casing he’d used as a tool, and tossed it into the bin.
"Next," he called out to the empty shop. "Who's next?"