4 Channel 5V Relay Board with Optocoupler for Arduino Raspberry Pi

• Each one needs 15-20mA Driver Current.
• Equipped with high-current relay: DC30V 10A AC250V 10A.
• Each relay has normally open and normally closed contact.
• The 4 channels are optically isolated, safe, reliable, anti-interference.
• Can be selected by jumper relay and TTL or ground.
• With power indicator, 4-way road has a status indicator.
• With a relay coil to absorb the diode protection.

Dimensions:

• The circuit board size 55 mm x 75 mm.