Description: This is a bistable (self-locking) relay module,Trigger once, the relay pull (and holds);Trigger again, the relay releases (and holds) Module interface: 1. VCC: positive power supply (VCC) 2. GND: negative power supply (GND) 3. T : Low pulse trigger Relay outputs: 1. NO: normally open relay interface 2. COM: Common Interface Relays 3. NC: normally closed relay interface USE : By default, the relay is release, press the trigger button, the relay pull, press again, the relay release, the third press, the relay pull, and so on Typical applications: Automotive electronics Motor LED Smart Home Emergency lighting MCU development board Toy car Specifications: Working voltage: DC 5V Working current: 70MA Standby current: 1UA Load current: AC 250V / 10A, DC 30V / 10A Trigger mode: Low pulse trigger Size: 3.5x2.1x1.7/1.38x0.83x0.67inch Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 Pc x Latch Relay Module