... remote control kit M4 lock receiver plate with four-button wireless remote controlManual remote control with decoding receiver board A remote controller Operating ... bits, respectively, VT, D3, D2, D1, D0, the +5 V and GND. VT is a valid signal high output pin Upon ... control has four buttons, respectively, corresponding to the four data bits to the receiving board output pin D0, D1, D2, and D3 of ...