1. What is the PO versions? PO is self-locking mode. For example, when the external forward switch (K1) is pressed, the motor immediately rotate forward. At this time, the switch be released immediately, and the motor still keep rotating forward. It not stop until it encounters the reverse rotation signal (K2) or the forward rotation stop signal (SW1). 3. What is the limit signal? The limit signal can also be called a stop signal. The limit signal is trigger type and level-enabled. For example, if a short limit signal is encountered during forward rotation, it stop, even if the limit signal disappears, it still stop. The forward rotation signal must be restarted to run forward again. 2. What are the requirements for the signal, can the sensor be connected? The signal is active low, it can be a three-wire sensor (NPN-NO type), K1 K2 Sw1 SW2 is still this specification. 4. What is the input and output voltage? The input voltage range of TKS-M8 is 4v-40v, but to reliable operation, it is recommended to use it in the range of 6V-36V. The output motor is the same as the input voltage., Weight: 0.32187490252 pounds, Manufacturer: Prterver