Olimex MOD-IO Atmel ATMega16 Quad Relay I/O Module

The Olimex MOD-IO UEXT relay and input card has an on-board Atmel ATMega16L-8AU microcontroller with open source demonstration firmware for control over I2C. Each board has both a male and a female UEXT connector making them stackable and, by using a master slave arrangement over the I2C bus, as many boards as needed can be linked together. New firmware can be installed through an AVR programmer compatible ICSP connector or by using the JTAG feature. The board has 4 x opto-isolated inputs with LEDS, 4 x relays with 10A 250V AC contacts and LEDS, 4 x analog inputs plus 4 x 3.3V DC digital outputs.

• Supply voltage 8 - 30V DC
• Screw terminals on isolated inputs and relay outputs
• Four mounting holes
• Dimensions 80 x 100mm (3.9 x 3.15in)