IIC Communication: JP1 is the IIC communication port. For IIC communication, short-circuit and Z on JP2 and pull them high. ABZ Communication: JP2 is the ABZ communication port, with default values of AB = 256 and Z = 4. (Note: JP1's MODE pin must be short-circuited to GND.) PWM Output: JP3 is the PWM output port, with the default PWM frequency set to 994.4. Short-circuit JP1's MODE pin to GND and pull it low. Communication: JP2 supports communication. Wiring is as follows: Z connects to , B connects to CLK, A connects to DO, and MODE shorts to . Model:-134 Chip Model: MT6701 JP1: IIC JP2: ABZ Output (AB: 256, Z: 4) JP3: PWM: 971.1Hz Color:Black Material:PCB Package Contents: 1 * Magnetic encoder 1 * Magnet 1 * pin Only 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.