USB One Channel Relay

http://www.kmtronic.com/usb-one-relay-box.html

USB Relay Controller - One Channel BOX.pdf

http://kmtronic.com/usb-to-rs485-ftdi-interface-converter-pcb.html

USB Relay Controller - One Channel PCB.pdf  

USB Two Channels Relay

http://kmtronic.com/usb-relay-controller-two-channels.html

USB Relay Controller - Two Channel.pdf 

USB 4 Channels Relay

USB 4 Channels Relay Controller.pdf 

USB 8 Channels Relay

http://kmtronic.com/usb-eight-channel-relay-controller-rs232-serial-controlled-12v.html

Eight Channel USB Relay Controller - RS232 Serial controlled - 12V   

RS232 8 Channel Relay

RS232 Serial COM controlled Eight Channel Relay Board - 12V  

2 Channel Relay

Two Relay board 5V  
Two Relay board 12V  
Two Relay board 24V  

4 Channel Relay 

Four Relay board 5V  
Four Relay board 12V  

8 Channel Relay

Eight Relay board 5V  
Eight Relay board 12V  
Eight Relay board 24V  

USB<>RS485 Adapter

http://kmtronic.com/usb-to-rs485-ftdi-interface-converter-box.html

USB to RS485 FTDI interface Board BOX  

http://kmtronic.com/usb-to-rs485-ftdi-interface-converter-pcb.html

USB to RS485 FTDI interface Board PCB  

RS485 8 Channel Relay

RS485 8 Channel Relay Board, RS485  

RS485 Output Controller

RS485 to 8 Digitally Outputs controller  

USB EEPROM programmer

USB KEEProg E-Eprom programmer  

USB 24xxx EEPROM programmer

USB 24xxx I2C E-Eprom programmer  

USB 25xxx EEPROM programmer

USB 25xxx SPI Bus E-Eprom programmer  

RS485 Output Controller

RS232 serial 8 Digital Channel Output Modul  

USB FTDI UART TTL Controller

USB to serial UART FTDI interface Board  

DINo Internet Ethernet Relay IO board

DINo Internet Ethernet Relay IO board