Supports Raspberry Pi 3B+ 4B, the RPi Relay Board gives your Pi the ability to control high voltage/high current devices, easily makes normal home appliances become intelligent. And support 802.3af Power-over-Ethernet (PoE) from Raspberry Pi gigabit ethernet port, allows you to power your Raspberry Pi using Power over Ethernet?enabled networks.
Power-over-Ethernet (PoE): IEEE802.3af compliant. Support PoE applications in both of Fast / Gigabit Ethernet environments. Fully isolated switched-mode power supply. Support wide input voltage range 37Vdc to 57Vdc. output 5V/2.5A
Subminiature high power relays, loads up to 10Amp 277VAC / 28VDC. One LED for power and three LEDs for relays status indicating. Darlington transistors circuit driving relay, improve the reliability of action. Relay control jumper, allows to control the relays by custom pins other than the default pins