... Wireless receiver 1.Memory function 2.AC220V 3.4ch with case 4. stay at previous before the power shut Model No.: DL-CS4012LMDescription ... pressing until the led is on, then release, indicating the receiver is ready and waiting to learn from transmitter. c) ... , ChB: MomentaryChC, ChD: Toggle 5. Wiring diagram: 6. Packing: DL-CS4012LM Memory function Wireless receiver