... kit M4 lock receiver plate with four-button wireless remote control Product Description2262/2272 four ... kit M4 lock receiver plate with four-button wireless remote controlManual remote control with decoding ... voltage DC5V, receiver sensitivity is-98db. Leg 7 bits, respectively, VT, D3, D2, D1, D0, ... buttons, respectively, corresponding to the four data bits to the receiving board output pin D0, D1 ...