SEENGREAT 4 Channel Relay Modules DC3.3V/5V with Optocoupler for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B Loads up to 5A 250V, 40pin GPIO Interface

Relay allows access to the load:250V/5A and supply voltage is 3.3V&5V With relay working indicator, it is convenient to check the working status of the relay. The DIP switch is designed for the designated pin selecting, and the "ON" status indicates that the relay is connected to the specified control pin, and vice versa, indicating that the user can access other pins through the jumper Optocoupler isolation circuit, strong anti-interference ability, stable work Based on 40PIN GPIO header design for Raspberry Pi , intended for Raspberry Pi series motherboard, such as: for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B Providing open source demo codes for Raspberry Pi. Note: For Raspberry Pi 4B in photo is not included