A general purpose Relay board for connection to a PC's USB port using VCP (Virtual COM port). Control devices using your PC. USB Relay controller allows a PC to control external devices using simple RS232 commands. Relay is fully powered from the USB bus.
Manufacturer:
KMtronic LTD
Features:
- Fully assembled and tested
- Fully powered from USB
- For 12V/24VDC 2A max.
- Can be used with LabVIEW, ProfiLab, DAQFactory, TestPoint, DASYLab, VEE
USB to serial interface:
FTDI FT232RL Chip
www.ftdichip.com/Products/ICs/FT232R.htm
Complete including:
One USB relay board
Dimensions (PCB board):
100 mm / 58 mm / 24 mm
Cable specifications:
Capable of switching max:
- 12VDC/2A
- 24VDC/2A
Connectors:
Connector Type A: 2.1mm DC Socket
Connector Type B: 2.1mm DC Plug
Cable Length 40-45 cm
Relay datasheed:
www.info.kmtronic.com/manuals/RAS.pdf
Supply:
Fully powered from USB
Operation Range:
0°C to +80°C
Drivers :
All Windows systems, Windows RT, Linux,
Mac OS 8, Mac OS 9, Mac OS X,
Android, Raspberry Pi, Arduino ADK,
Arduino with USB Host Shield...
www.ftdichip.com/FTDrivers.htm
Communication Parameters:
8 Data, 1 Stop, No Parity
Baud rate : 9600
Commands:
“FF 01 00” (HEX) or “255,1,0” (DEC) - OFF command
“FF 01 01” (HEX) or “255,1,1” (DEC) - ON command
“FF 01 03” (HEX) or “255,1,3” (DEC) - Status request
NOTE : Each command consists in 3 binary bytes (shown in hexadecimal below) without any space!
Windows Test software:
www.info.kmtronic.com/kmtronic-usb-relay-test-software.html
Customers projects:
www.info.kmtronic.com/kmtronic-customers-projects.html
Software Examples:
www.info.kmtronic.com/usb-rs232-rs485-relays.html
.

Manufacturer:
KMTronic LTD
Features:
- Each relay has an LED to indicate when it is operated.
- Relay outputs can be used to turn ON/OFF lights, motors and other devices.
Specifications:
Relays have Normally Open (NO) and
Normally Closed (NC) Contacts each capable of switching max:
- 12VDC/15A
- 24VDC/15A
- 125VAC/15A
- 250VAC/10A
Supply:
Fully powered from USB
Operation Range:
Industrial (0°C to +80°C)
Dimensions:
76 mm / 59 mm
Drivers:
http://www.ftdichip.com/Drivers/VCP.htm
Drivers are available to work with the following operating systems:
Windows Server 2008 R2, Windows 7, Windows 7 x64, Windows Server 2008,
Windows Server 2008 x64, Windows Vista, Windows Vista x64, Windows Server 2003,
Windows Server 2003 x64, Windows XP, Windows XP x64, Windows 2000, Windows ME,
Windows 98, Linux, Mac OS X, Mac OS 9, Mac OS 8, Windows CE.NET (Version 4.2 and greater)
Communication Parameters:
8 Data, 1 Stop, No Parity
Baud rate : 9600
Commands:
FIRST chanel commands:
OFF command : FF 01 00 (HEX) or 255 1 0 (DEC)
ON command : FF 01 01 (HEX) or 255 1 1 (DEC)
SECOND chanel commands:
OFF command : FF 02 00 (HEX) or 255 2 0 (DEC)
ON command : FF 02 01 (HEX) or 255 2 1 (DEC)
THIRD chanel commands:
OFF command : FF 03 00 (HEX) or 255 3 0 (DEC)
ON command : FF 03 01 (HEX) or 255 3 1 (DEC)
FOURTH chanel commands:
OFF command : FF 04 00 (HEX) or 255 4 0 (DEC)
ON command : FF 04 01 (HEX) or 255 4 1 (DEC)
--------------------------- USB ---------------------------
![]() |
USB One Channel Relay Controller (PCB) www.info.kmtronic.com/usb-one-channel-pcb.html |
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USB One Channel Relay Controller (BOX) www.info.kmtronic.com/usb-one-channel-box.html |
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USB One Channel Relay Controller for DC Power (BOX) www.info.kmtronic.com/usb-one-channel-dc.htm |
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USB Two Channels Relay Controller (BOX) www.info.kmtronic.com/usb-two-channels.html |
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USB Four Channels Relay Controller (PCB) www.info.kmtronic.com/usb-four-channels.html |
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USB Eight Channels Relay Controller (BOX) www.info.kmtronic.com/usb-eigth-channels.html |
--------------------------- RS-485 ---------------------------
![]() |
USB to RS485 FTDI Interface Converter (PCB) www.info.kmtronic.com/usb-to-rs485-converter-pcb.html |
![]() |
USB to RS485 FTDI Interface Converter MINI (PCB) www.info.kmtronic.com/usb-to-rs485-converter-mini.html |
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USB to RS485 FTDI Interface Converter (BOX) www.info.kmtronic.com/usb-to-rs485-converter-box.html |
![]() |
Opto Isolated USB to RS485 FTDI Interface Converter (BOX) www.info.kmtronic.com/opto-usb-to-rs485-converter-box.html ![]() |
![]() |
RS485 Eigth Channels Relay Controller (BOX) www.info.kmtronic.com/rs485-eigth-channels.html |
--------------------------- RS-232 ---------------------------
![]() |
RS232 Eight Channel Relay Board (BOX) www.info.kmtronic.com/rs232-eigth-channels.html |
--------------------------- UART/TTL ---------------------------
![]() |
UART Eight Channel Relay Board (BOX) www.info.kmtronic.com/uart-eigth-channels.html |
--------------------------- RF433MHz ---------------------------
![]() |
RF433MHz USB Wireless Transceiver Module (BOX) www.info.kmtronic.com/usb-rf433mhz-module.html |
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USB > RF433MHz > 8 Channel Relay Board (BOX) www.info.kmtronic.com/usb-rf433mhz-eight-channels.html |
--------------------------- LAN ---------------------------
![]() |
LAN Ethernet IP 2 channels WEB Relay board (PCB) www.info.kmtronic.com/km-web-two-relay-pcb.html |
![]() |
LAN Ethernet IP 2 channels WEB Relay board (BOX) www.info.kmtronic.com/km-web-two-relay-box.html |
![]() |
LAN Ethernet IP 8 channels WEB Relay board (BOX) www.info.kmtronic.com/km-web-eight-relay-box.html |
![]() |
LAN Ethernet IP 2 channels UDP Relay board (PCB) www.info.kmtronic.com/km-udp-two-relay-pcb.html |
![]() |
LAN Ethernet IP 2 channels UDP Relay board (BOX) www.info.kmtronic.com/km-udp-two-relay-box.html |
![]() |
LAN Ethernet IP 8 channels UDP Relay board (BOX) www.info.kmtronic.com/km-udp-eight-relay-box.html |
--------------------------- PROGRAMMERS ---------------------------
![]() |
USB E-Eprom programmer - 24xx, 93xx, 25xx, 95xx eeproms www.info.kmtronic.com/usb-eeprom-programmer.html |
![]() |
USB E-Eprom and Serial Flash Programmer www.info.kmtronic.com/usb-eeprom-flash-programmer.html |
--------------------------- TEMPERATURE ---------------------------
![]() |
USB DS18B20 1-Wire Digital Thermometer (PCB) www.info.kmtronic.com/usb-ds18b20-digital-thermometer.html |
![]() |
USB DS18B20 1-Wire Digital Thermometer (PCB) www.info.kmtronic.com/usb-ds18b20-thermometer-cable.html |
![]() |
LAN DS18B20 Temperature Monitor (BOX) ![]() www.info.kmtronic.com/lan-ds18b20-temperature-monitor.html |
--------------------------- RFID ACCESS CONTROL ---------------------------
USB RFID 125 kHz Access Control Reader Module
www.info.kmtronic.com/usb-rfid-125-khz-access-control-reader-module.html
--------------------------- ARDUINO ---------------------------
WEB, Internet , Ethernet controlled relay board: Arduino compatible, RS485, USB
www.info.kmtronic.com/web-controlled-relay-board-arduino-compatible.html
...
...
...
--------------------------- USB ---------------------------
USB One Channel Relay Controller (PCB)
www.info.kmtronic.com/usb-one-channel-relay-pcb.pdf
USB One Channel Relay Controller (BOX)
www.info.kmtronic.com/usb-one-channel-relay-box.pdf
USB Two Channel Relay Controller (BOX)
www.info.kmtronic.com/usb-two-channel-relay-box.pdf
USB Four Channel Relay Controller (PCB)
www.info.kmtronic.com/usb-four-channel-relay.pdf
USB Eight Channel Relay Controller (BOX)
www.info.kmtronic.com/usb-eight-channel-relay.pdf
...
...
...
Under Development
WEB Controlled
Controlling multiple KMtronic WEB Relays Boards by Node-RED 
https://info.kmtronic.com/controlling-multiple-kmtronic-relays-board-by-node-red.html
Control KMtronic LAN relays using Browser Bookmarks 
http://www.info.kmtronic.com/control-kmtronic-lan-relays-using-browser-bookmarks.html
LAN Ethernet IP 2 channels WEB Relay board
http://info.kmtronic.com/lan-ethernet-ip-2-channels-web-relay-board.html
Control KMtronic USB, RS485 and TCP(Web) relay boards by Domoticz 
www.info.kmtronic.com/usb-rs485-and-tcp-web-relay-boards-by-domoticz.html
2 WEB Relay board Sample software C# NET 2010 (inc. source code)
http://info.kmtronic.com/cs-example-for-web-2-relay-board.html
2 WEB Relay board Sample software VB NET 2010 (inc source code)
http://info.kmtronic.com/vb-example-for-web-2-relay-board.html
Controlling WEB 2 Relay board using BAT Files
http://info.kmtronic.com/controlling-kmtronic-web-2-relay-board-using-bat-files
Windows Command Line control for KMtronic WEB 2 Relays
www.info.kmtronic.com/software/Web_2_Relay/Web_2_Relay_CMD.zip
2 WEB Relay board PHP Library
http://www.info.kmtronic.com/KMtronic_RelayLib_2_PHP.zip
PLC 2 relay remote control net for Android 
http://info.kmtronic.com/plc-2-relay-remote-control-net-for-android.html
MyDomotica (Android home automation software) 
http://info.kmtronic.com/mydomotica.html
LAN Ethernet IP 8 channels WEB Relay board
http://info.kmtronic.com/kmtronic-lan-ethernet-ip-8-channels-web-relay-board.html
8 WEB Relay board Sample software C# NET 2010 (inc. source code)
http://info.kmtronic.com/cs-example-for-web-8-relay-board.html
8 WEB Relay board PHP Library (thanks, Scott)
http://www.info.kmtronic.com/software/Web_8_Relay/KMTronic_RelayLib_8_PHP.zip
Control KMtronic LAN WEB Relay board via PHP
http://www.info.kmtronic.com/control-kmtronic-lan-web-relay-board-via-php.html
Control4 KMtronic WEB IP Relay Driver by Soft.Kiwi
www.info.kmtronic.com/control4-kmtronic-web-ip-relay-driver-by-soft-kiwi.html
Windows Command Line control for KMtronic WEB 8 Relays
www.info.kmtronic.com/software/Web_8_Relay/Command_8RELAY_WEB.zip
PLC 8 relay remote control net for Android 
http://info.kmtronic.com/plc-8-relay-remote-control-net-for-android.html
MyDomotica (Android home automation software) 
http://info.kmtronic.com/mydomotica.html
Domoticz (Open source Home Automation System) 
www.info.kmtronic.com/usb-rs485-and-tcp-web-relay-boards-by-domoticz.html
PLC 8 relay remote control net for iPhone and iPad 
http://info.kmtronic.com/plc-8-relay-remote-control-for-iphone-and-ipad.html
UDP Controlled
LAN Ethernet IP 2 channels UDP controlled Relay board
http://www.info.kmtronic.com/kmtronic-lan-ethernet-ip-2-channels-udp-relay-board.html
LAN Ethernet IP 8 channels UDP controlled Relay board
http://info.kmtronic.com/lan-ethernet-ip-8-channels-udp-relay-board.html
KMTronic UDP Test Software
http://info.kmtronic.com/kmtronic-udp-test-software.html
Capture UDP commands via Wireshark network protocol logger analyzer
http://info.kmtronic.com/capture-udp-commands.html
Socat UDP control (Windows, Linux, AIX, BSD, HP-UX, Solaris e.a.)
http://info.kmtronic.com/socat-udp-control.html
Control KMtronic LAN UDP Relay board via PHP
http://www.info.kmtronic.com/control-kmtronic-lan-udp-relay-board-via-php.html
Controlling UDP Relay Boards from Macro Express 
http://info.kmtronic.com/controlling-udp-lan-relays-via-macro-express.html
Controlling UDP Relay boards using PHP Files 
http://info.kmtronic.com/controlling-lan-udp-relay-board-via-php.html
Controlling UDP Relay Boards using BAT Files 
http://www.info.kmtronic.com/controlling-udp-relay-boards-using-bat-files.html
Controlling UDP Relay Boards via Packet Sender Software 
http://www.info.kmtronic.com/control-kmtronic-udp-lan-relays-via-packet-sender.html
Controlling UDP Relay Boards with Loxone 
http://www.info.kmtronic.com/controlling-kmtronic-udp-relays-by-loxone-home-automation-miniserver.html
Orbose Kiosks integrated KMTronic USB relays to the Orbose Kiosk solution so your business can enjoy self-service product fulfillment.
The KMTronic USB relay allows our kiosk to automatically unlock doors to a fridge, kiosk, etc. upon a successful order through the software solution.
http://www.orbose.com/?page_id=2319
HouseLogix, Inc.is a pioneering US technology company based in Pennsylvania.
The HouseLogix product division designs, develops, and manufactures products and software
that serve the home automation industry such as the VoicePod devices and apps.
The service division delivers high quality commercial and residential automation installations.
This driver allows you to control the 8 relay device from KMTronic in the Control4 System. With bindings for the 8 relays, simply connect to the Generic Relay driver you want to use and from the Control4 UI you will be able to open and close each zone.
Driver:
https://www.houselogix.com/shop/kmtronic-8-relay-board-control4-driver-license
KMTronic LAN Ethernet IP 2 channels WEB Relay board PCB
Written by kmtronic
Manufacturer:
KMTronic LTD
Features:
- Each relay has an LED to indicate when it is operated.
- Relay outputs can be used to turn ON/OFF lights, motors and other devices.
Specifications:
Relays have Normally Open (NO) and
Normally Closed (NC) Contacts each capable of switching max:
- 12VDC/15A
- 24VDC/15A
- 125VAC/15A
- 250VAC/10A
Supply:
Requires external 12 volt DC / 500mA power supply
Operation Range:
Industrial (0°C to +80°C)
Dimensions:
105 mm / 51 mm / 20 mm
Default:
IP address: 192.168.1.199
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.1
Username: admin
Password: admin
Reset to Default Settings:
Hold Reset button for 10 seconds
KMTronic LAN Ethernet IP 2 channels WEB Relay board BOX
Written by kmtronic
Manufacturer:
KMTronic LTD
Features:
- Each relay has an LED to indicate when it is operated.
- Relay outputs can be used to turn ON/OFF lights, motors and other devices.
Specifications:
Relays have Normally Open (NO) and
Normally Closed (NC) Contacts each capable of switching max:
- 12VDC/15A
- 24VDC/15A
- 125VAC/15A
- 250VAC/10A
Supply:
Requires external 12 volt DC / 500mA power supply
Operation Range:
Industrial (0°C to +80°C)
Dimensions:
105 mm / 51 mm / 20 mm
Default:
IP address: 192.168.1.199
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.1
Username: admin
Password: admin
Reset to Default Settings:
Hold Reset button for 10 seconds
RS232 Serial COM controlled Eight Channel Relay Board
Written by kmtronic
The complete includes:
- One RS232 output (12V)
Required power:
12VDC / minimum 600 mA.
Standby current:
(Relays OFF) - 21 mA
One Relay ON - 57 mA
Two Relays ON - 91mA
All Relays ON - 300 mA
Model:
R2S8CR
Features:
- Each relay has an LED to indicate when it is operated.
- Relay outputs can be used to turn ON/OFF lights, motors and other devices.
Specifications:
Relays have Normally Open (NO) and Normally Closed (NC) Contacts each capable of switching max:
- 12VDC/15A
- 24VDC/15A
- 125VAC/15A
- 250VAC/10A
Dimensions:
http://info.kmtronic.com/KMtronic-8Relay-Dimension.pdf
Communication Parameters:
8 Data, 1 Stop, No Parity
Baud rate : 9600
Commands:
FIRST channel commands:
OFF command : FF 01 00 (HEX) or 255 1 0 (DEC)
ON command : FF 01 01 (HEX) or 255 1 1 (DEC)
...
...
...
EIGHT channel commands:
OFF command : FF 08 00 (HEX) or 255 8 0 (DEC)
ON command : FF 08 01 (HEX) or 255 8 1 (DEC)
Software examples:
http://www.info.kmtronic.com/usb-rs232-rs485-relays.html
USB E-Eprom and Serial Flash Programmer - bios, router
Written by kmtronic
SUPPORT:
I2C EEPROMS
24C00, 24AA00, 24LC00, 24C01C, 24AA01,24LC01B, 24AA014, 24LC014, 24C02C, 24AA02,24LC02B, 24AA024, 24LC024, 24AA025, 24LC025,24AA04, 24LC04B, 24AA08, 24LC08B, 24AA16,24LC16B, 24LC21, 24LC21A, 24LCS21A, 24LC22A,24LCS22A, 24LC32A, 24AA32A, 24AA52, 24LCS52,24LC64, 24AA64, 24FC64, 24C65, 24LC65, 24AA65,24AA128, 24LC128, 24FC128, 24LC256, 24AA256,24FC256, 24AA512, 24LC512, 24FC512, 24AA515,24LC515, 24FC515, 24xx1024, 24AA1025, 24LC1025,24FC1025
SPI EEPROMS
25xx010, 25xx020, 25xx040, 25xx080,25xx160, 25xx320, 25xx640, 25xx128, 25xx256,25xx512, 25xx1024
Microwire SPI EEPROMS
9306, 93C06, 93LC06,9346, 93C46, 93LC46,9356, 93C56, 93LC56, 9366, 93C66, 93LC66,9376, 93C76, 93LC76, 9386, 93C86, 93LC86
SPI EEPROMS
95010, 95020, 95040, 95080, 95160, 95320,95640, 95128, 95256, 95512, 95M01
--- NEW ---
5P08, 24RF08 - EEPROM zone, 24RF08 - SECURITY zone
Serial Flash memories
Macronix
MX25L512, MX25L5121E, MX25L512C, MX25L512E, MX25V512, MX25V512C,
MX25L1005C, MX25L1006E, MX25L1021E, MX25L1025C, MX25L2005,
MX25L2006E, MX25L2026C, MX25L2026E, MX25L4005A, MX25L4006E,
MX25L4026E, MX25U4035, MX25V4005, MX25V4005C, MX25V4006E,
MX25V4035, MX25L8006E, MX25L8035E, MX25L8036E, MX25U8035,
MX25U8035E, MX25V8005, MX25V8006E, MX25V8035, MX25L1606E,
MX25L1633E, MX25L1635E, MX25L1636D, MX25L1636E, MX25U1635E,
MX25L3206E, MX25L3225D, MX25L3235D, MX25L3236D, MX25L3237D,
MX25U3235E, MX25L6406E, MX25L6436E, MX25L6445E, MX25L6465E,
MX25U6435E, MX25L12835E, MX25L12836E, MX25L12845E, MX25L12865E
Spansion
S25FL004A, S25FL040A, S25FL004K, S25FL008K, S25FL008A, S25FL016A,
S25FL016K, S19FL032P, S25FL032A, S25FL032P, S25FL032K, S19FL064P,
S25FL064A, S25FL064P, S25FL064K, S19FL128P, S25FL128P, S25FL129P,
S25FL128K
Eon SSI
EN25F05, EN25F10, EN25LF10, EN25S10, EN25F20, EN25LF20, EN25S20,
EN25F40, EN25Q40, EN25LF40, EN25S40,
EN25F80, EN25Q80A, EN25S80, EN25F16, EN25Q16, EN25QH16, EN25F32,
EN25Q32A, EN25Q32B, EN25B64, EN25P64,
EN25Q64, EN25Q128
Supply:
The programmer is electrically supplied from the USB port of your PC and does not need any external power supply.
Includes:
- USB programmer
- Software
- USB cable
Software:
Included in complete. Works under Windows XP, Vista.

https://info.kmtronic.com/kmtronic-programmers.html