8 Channel 5V Relay Board Module Optocoupler LED for Arduino PiC ARM AVR Size: 13.5 x 5.3 x 1.7cm (LxWxH) Working voltage: 5V Channel: 8 channel This relay module is 5V active low. It is an 8-channel relay interface board, which can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, PLC, etc. It is also able to control various appliances and other equipments https://elecena.pl/product/18529709/8-channel-5v-relay-board-module 2021-05-21 https://elecena.pl/product/18529709/8-channel-5v-relay-board-module 2025-07-09