# 4 230 inputs, 4 relay outputs 1-Wire board #
4 230 V inputs to monitor togle relais. Let you know if light is on or off and togle them witha domestic automationsystem.
Tested on Arduino and ESP32 board. May install a cap to filter 50/100 Hz or do it by soft (20 mS timer for on/of)
Used to monitor and change hardwired togle relais in an existing electrical installation....