Support Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards (Raspberry Pi 4B/3B+/3B/2B/A+/B+ )
High quality relays, loads up to 5A 250V AC or 5A 30V DC
Photo coupling isolation, prevent interference from high voltage circuit
Onboard LEDs for indicating relays status
Relay control jumper, allows to control the relays by custom pins other than the default pins