Channel Modbus Relay Output Module has 8 single changeover onboard relays with contacts taken out for field devices. Shavison Electronics manufactures 8 Channel Modbus Relay Output Module. Shavison Electronics also manufactures various types of interface modules, switch mode power supply, signal converters /isolators, micro-controller based system etc. The 8 Channel Modbus Relay Output Module has each relay with unique coil address which is used to force relay on/off. This Output Module has dimension of 185 mm [W] X 115 mm [H] X 80 mm [D].