5V 16-Channel Relay Board Module Low Trigger

5V 16-Channel Relay Board Module Low Trigger
Active low relay board with 5V relays capable of being switched on-off by an opto-isolated digital input. The relays are controlled by a microcontroller connected to the output pin and require a minimum 1V to switch the inputs ON. Suitable for 5V and 3.3V devices, these boards are perfect for Raspberry Pi, Arduino, PIC and various other microcontrollers.