Ideal for use with Arduino and other microcontrollers, this relay module uses data signals to switch a 5V relay. Onboard LED indicators light when relay is switched. Screw terminals for relay outputs. 0.1" header for voltage and signal input. 44 x 27 x 18mm. 2-relay (CAT# RLM-2) and 4-relay (CAT# RLM-4) modules are also available.
