Comes fully assembled Supports any microcontroller or TTL signal. 3.3V and 5V supported. Relay current consumption at 5V is 75mA Red LED On Indicator On-board switching transistor. On-board back EMF protection. Easy 1 wire drive. High for on, low for off. Size 34mm long x 27mm wide x 17mm high 4 Mounting holes
This small Relay Board works from a 5V signal. It uses a transistor to switch the relay on so can be connected directly to a microcontroller pin.
Switches up to 10Amps. Rated at up to 250V