Trigger Mode: Our module operates using a low-level signal trigger mode. 2 x4 Channel Relay Module. Color: Black,Blue.
Low Signal Triggering Capability in a Dual Pack of 4 Channel Relays at DC 5V
Innovative Design Dual Pack of Low Level Triggering Relay Modules at DC 5V
Bright and Energy efficient 6mm LED Signal Lights Waterproof Pack of 4
