I can replace 8 SSR with this one item. The price is right and the product flat out works. I needed an item that could handle lower load voltages and this item has worked great! I will buy a couple more.By
This product rocks!
When GPIOs are switched to high, the relay turns on, and an LED on the board turns on for each relay.By
Simple and straight forward. I use this connected to a Raspberry Pi, with an external 5v adapter, and 120V AC sockets attached to each relay. No transistors necessary, connected GPIO pins from the Pi to the numbered terminals on this board, 5v power to the 5v terminal, and ground to both GND terminals. To wire AC current on the switched side you can connect either the AC/mains common OR the hot, I prefer to go with the common.