Note: 1. In order for the module to work stably, be sure to use a power supply that is more than twice the load power. If the load is a motor, please use a power supply with more than 3 times the power.2. The maximum load current is 2A, if it is a load motor, the maximum load current is 1A3. The module can only control forward and reverse rotation (start and stop are controlled by power-on and power-off)Description: Self-locking (bistable) reverse polarity controllerInput voltage: DC 5V (5V version)Module working current: forward rotation 2MA, reverse rotation 35-40MALoad voltage: equal to the output voltageLoad current: maximum 2A (motor1A)With power indicator and reverse polarity indicatorControl mode: low pulse controlThis is a self-locking (bistable) reverse polarity relay. Trigger once, output reverse polarity (and keep), and trigger again, output = input (and keep)Pin description: I+: power input +; I-: Voltage input -; O+: power output + (when the polarity is reversed, the output is -); O-: power output-(the output is + when the polarity is reversed); G: trigger signal ground; T: Trigger signal input (0.2-2 second low pulse).Instructions: After power on, output = input, press the trigger button, reverse polarity output, trigger the button again, output = input, trigger the button for the third time, reverse polarity output. And so on.Turn off the power and stop the output.size: 43mm x 21mm x 16mmMaterial: PCBcolour: GreenPackage Contents: 1 x reverse polarity controllerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.