1. What is the PO version? PO is a self-locking mode. When the external forward switch (K1) is pressed, the motor will immediately rotate forward. Even if the switch is released, the motor will continue rotating forward until it receives a reverse rotation signal (K2) or a forward rotation stop signal (SW1).2. What are the signal requirements? Can a sensor be connected? The signal input is active low. A three-wire NPN-NO type sensor can be used. K1, K2, SW1, and SW2 follow this specification.3. What is the limit signal? The limit signal acts as a stop signal. It is trigger-type and level-enabled. If a short limit signal is encountered during forward rotation, the motor will stop. Even if the limit signal is removed, the motor remains stopped. The forward rotation signal must be reactivated for the motor to run forward again.4. What is the input and output voltage? The input voltage range for the TKS-M8 is 4V40V. For reliable operation, use within 6V36V. The output voltage to the motor matches the input voltage.Working voltage: Wide voltage DC 4V40V Module power consumption: 0.6W (no load motor), 0.1W static Signal input: Active low level, connected to the negative side of the optocoupler. A voltage below 2V is considered an active signal Response speed: 20ms for K1/K2, 50ms for SW1/SW2 Output current: 20A Operational life: 150,000 cycles PO/Standard version: After a short trigger, the motor continues running until a limit or commutation signal is received Color: Green Material: PCB Size: 83x46x20mm Package Contents: 1 x PO Forward/Reverse Controller Only the above package content is included; other items are not included. Note: Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.