MODBUS/RTU or ASCII module to control 1 relay output with changeover contacts for 250Vac or 30Vdc with max. 8A via serial bus, Host communication: via RS232 or RS485 with simple ASCII strings or MODBUS/RTU slave protocol, Host baud rates: 9600, 19200, 38400 or 57600Bd, no, even or odd parity, 8 data bits, 1 stop bit, the relay output has changeover contacts and is galvanically insolated, relay output: contact material: Au-flashed AgNi, resistive load: with 250Vac, max. 8A, with 30Vdc, max. 8A, max. switching power: with 250Vac 2000VA, with 30Vdc 240W, max. switching voltage: 250Vac or 125Vdc with 0.2A, Configuration and testing of module with free PC software MODBUS configurator, Weight: 60g, Dimension (LxWxH): 17,5x90x58mm, Power supply: 12-48V=, Power consumption: <0.8W, Mountable onto a EN50022 DIN rail.