... Controller KL-K400CWorking current: 8mAWorking voltage: DC12VOperating Frequency: 266-433MHZReceiver sensitivity: -95dbThe encoding type: learning typeWorking mode: non lock, interlocking ... Jumper on S1 &S2→ Unlocking4. WiringOn the back of receiver board marks: K, G, and BK is normal open ... jumper is off position) press A on the transmitter, receiver A goes on 2 seconds, then goes off automatically, ...