... state. (similar to PT2272-M4) 2. Press the button of ZW20-J for 2 times , and at the same time ... -l4) 3. Press the button of ZW20-J for 2 times, at the same time, learning indicator light ... -T4) 4. Press the button of ZW20-J for 2 times, at the same time, learning indicator light ... the pin 5VTD1- D4 output state instructions (initial for low level, decoding, successful output high) 6VSSConnect power ...