The Arduino 5V relay module is suitable for SCM development, and home appliance control. It has a 5V~12V TIL control signal which can control DC / AC signal. The module is perfect for the common Arduino application. Specification: 1 channel relay board Operating Voltage 5V Max Current: 20mA Relay Contact Current Capacity at AC250V: 10A Relay Contact Current Capacity at DC5V: 10A