Feature:1. This is a self-locking (bistable) double-pole double-throw relay. Once triggered, the relay pulls in, triggers again, and the relay is disconnected.2. With power indicator and reverse polarity indicator.3. Low pulse control mode, safer to use.4. Made of high-quality electronic components, stable and reliable performance.5. Easy to install and convenient to use.Specification:Item Type: DPDT Relay ModuleModule Working Current: Forward 2MA, reverse 60-70MALoad Current: 5A maximum (motor andlt = 3A)Control Mode: Low pulse controlSize: Approx. 39.5 x 33.3 x 23.3mm or 1.6 x 1.3 x 0.9inPin Description: V: Power positiveG: Power negative terminal and trigger signal ground terminal T: Trigger signal input (0.2-2 seconds low pulse).NO1: Relay normally open portCOM1: Relay common portNC1: Relay normally closed portNO2: Relay normally open portCOM2: Relay common portNC2: Relay normally closed portHow to use: When the power is turned on, the relay is turned off. Click the trigger port (T port) to pull in the relay, click the relay to release again, and so on..Package List:1 x DPDT Relay Module