ITEM NAME:12V 16 Channel Relay Module Board with Optocoupler Protection LM2576 Power N8F4 12V 16 Channel Relay Module Board with Optocoupler Protection LM2576 Power N8F4 12V 16-Channel Relay interface board. Equipped with high-current relay, AC250V 10A ; DC30V 12A Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP433, TTL logic). Indication LED's for Relay output status. Material : Metal Working voltage: 12V Channel: 16 channel Item size: 18 x 9 x 2cm Item weight:7.88 oz Package list: 1 x 12V 16-Channel Relay Module Board Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..12V 16-Channel Relay interface board. Indication LED's for Relay output status. Equipped with high-current relay, AC250V 10A ; DC30V 12A. Channel: 16 channel.