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  • USB custom switch line
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  • USB1RD35A USB 3.5 AUDIO FEMALE CONNECTOR USB Switching Cable With 3.5mm Audio Jack (female)
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  • Photoenergy thermometer
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  • PCsensor USB to RS232 serial adapter cable
  • PCsensor Reflective photoelectric switch
  • PCsensor DIY Switch line can connect one switch
  • PCsensor DIY switch cable can connect 3 pcs devices
  • PCsensor USB switch cable can connect 6 pcs different switches
  • PCsensor PT100 Platinum Electric Resistance Temperature Probe
  • PCsensor comprehensive USB Thermometer Hyrothermograph ( TEMPerX232_D)
  • PCsensor USB hygrometer data logger(TEMPerX232_T)with outer temperature sensor
  • PCsensor DS18B20 Temperature Waterproof Probe
  • PCsensor Mobile phone voltmeter VoltOTG
  • PCsensor Mini Travel Mobile Phone Infrared Thermometer
  • PCsensor Waterproof Temperature Sensor 4 pin connector tx probe
  • PCsensor Temperature Humidity Waterproof Sensor Probe
  • PCsensor IOT LAN563G
  • PCsensor IOT LAN563V
  • PCsensor Comprehensive USB Thermometer(TEMPerX232_H)
  • PCsensor Digital air temperature humidity meter
  • PCsensor Disposable Mini USB Temperature Data Logger
  • PCsensor 2 sensor USB Thermometer
  • PCsensor USB thermometer with external temperature sensor data recorder
  • PCsensor isolated Thermocouple thermometer K type Thermocouple probe
  • PCsensor Thermocouple meters for real-time temperature measurement
  • PCsensor Thermocouple with Relay K-Type Probe
  • PCsensor Thermocouple with 9~1024c K-Type Probe
  • PCsensor PT100A4W Waterproof Temperature Sensor Probe
  • PCsensor Temperature Logger TEMPer with Gold USB probe
  • PCsensor DIY 100 keys PCBA Board
  • PCsensor DIY-Keyboard PCBA
  • PCsensor Multi function Mouse Built in speaker
  • PCsensor AI audio mouse
  • PCsensor Isolated Switching Power Supply Module
  • PCsensor PDF Temperature Recorder
  • PCsensor Android phone thermometer
  • FS22X5U USB Custom five-digit pedal switch
  • PT23 Wireless Page Turner for Tablets Ipad Smart Phone Foot Pedal Switch Compatible with iOS, Android, Mac and Windows Devices
  • FS23 Foot switch, three-button foot switch
  • FS21 PCsensor Pedal de pie USB, impermeable, antiinterferencia, interruptor de pie para computadora, videojuegos, teclado de pie con cable USB de 6.6 ft, teclado programable personalizado para mouse
  • FS2020P/FS2017P PS/2 to USB footswitch Custom console handheld gamepad Footpad
  • FS2020 USB Foot Pedal PC 3-pedal Programmable Computer Keyboard Hot Key for PC Gaming Office Transcription Equipment Control HID
  • FS2020BT1/FS20 Wireless Bluetooth foot switch
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  • FS2017U Custom Footswitch
  • FS1-074 PCsensor Single Pedal Foot Switch for dental
  • FS2020TU USB Programmable 3-Pedal Foot Switch,pedal de 3 teclas, interruptor de pie personalizado, teclado de computadora programable, mouse para control de videojuegos, oficina, partituras PACS HIS
  • FS2016_USB2A USB custom two position footswitch,Interruptor de un solo pie USB Control One Key Pedal de acción de teclado de computadora personalizado HID
  • FS2019 Metal Single Pedal USB Foot Switch Programmable Keyboard Mouse Shortcut Compatible Medical Instrument Game Controller Transcription Push to Talk (Mechanical Switch)
  • FS2016BT Foot Pedal Wireless Programmable Keyboard Foot Switch Mouse Shortcut Hot Key for Tablet Laptop Computer Video Game
  • FS2016_USB2 PCsensor Two Pedals Foot Switch,USB doble 2 pedal de control de pedal de control de videojuego personalizado teclado multimedia clave clave libre HID
  • FS2016_USB USB Single Foot Switch Control One Key Customized Computer Keyboard Action Pedal HID
  • FS221 USB Foot Switch Singal Pedal,Pedal de pie USB, control de un solo interruptor, programa de ratón, tecla de acceso rápido y corte corto para juegos de PC con cable USB antiinterferencias
  • FS220 USB Foot Switch Singal Pedal,Interruptor de pedal de pie, programa USB para PC, control de pie de tecla caliente, manos libres, mouse para juego de Videa, trabajo de oficina
  • USB Keyboard Test Module
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  • USB Keyboard Test Module

    KMtester is a test module that detects the keystrokes of the USB keyboard. It has two modes: serial port and HID printing.

    • U.S.$40.99
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KMtester is a test module that detects the keystrokes of the USB keyboard. It has two modes: serial port and HID printing.

KMtester is a test module that detects the keystrokes of the USB keyboard. The keyboard to be tested is connected to the module.
The module is connected to the computer and has two modes of serial port and HID printing. Toggle the switch to the USB male side for the HID printing mode.
mode, dial to the USB female side for serial port mode. In serial port mode, the device will virtualize a serial port, the module is under test
When the keyboard is in action, upload the key state of the keyboard through the serial port. The following figure is the software interface of KMtester. The software can real-time
Displays the status of each key (pressed or released), and counts the number of times each key is pressed.
The description of serial port data analysis is as follows, you can develop analysis software by yourself:
Serial port configuration:
Baud rate: 115200bps
Data bits: 8
Check Digit: None
Stop bit: 1
Data Format:
01 04 14 media_key[3] 00 fun_code key_code[15] 0D
media_key[3]: Each function occupies one bit, the bit is 1 means press, the bit is 0 means release, sort according to the following table
For example, media_key[0]=0x01 means that the volume down key is pressed, and media_key[0]=0x03 means that the volume down and volume up keys are pressed at the same time


0x01 -> volume down
0x02->Volume Plus
0x03 -> mute
0x04 -> play/pause
0x05->Previous song
0x06->next song
0x07 -> stop
0x08 -> open the player
0x09 -> open home page
0x0a -> Interrupted loading web page
0x0b -> go back to the last web page viewed
0x0c -> go back to the next page viewed
0x0d -> refresh webpage
0x0e -> open my computer
0x0f -> open mail
0x10 -> open calculator
0x11 -> Open search file window
fun_code: function key code, each function occupies one bit, the functions are as follows
#define L_CTRL 0x01
#define L_SHIFT 0x02
#define L_ALT 0x04
#define L_WIN 0x08
#define R_CTRL 0x10
#define R_SHIFT 0x20
#define R_ALT 0x40
#define R_WIN 0x80

key_code[15]: Each key occupies one bit, starting from the A key of the key code, refer to the following table
For example, key_code[0]=01 means A key is pressed, key_code[0]=0 means B key is pressed, key_code[0]=03 means A and B keys are pressed at the same time,

#define Keyboard_a 4 // Keyboard a and A
#define Keyboard_b 5 // Keyboard b and B
#define Keyboard_c 6 // Keyboard c and C
#define Keyboard_d 7 // Keyboard d and D
#define Keyboard_e 8 // Keyboard e and E

 HID print mode:
The characters printed by keyboard key actions are as follows:

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