AD22B04 12V 4 Channel DTMF Tone Signal Decoder Relay Phone Remote Control PLC Features: Product model: AD22B04. Operating Current: Standby 11-13 MA, 1 relay "open" 44MA, 2 relays "Open" 77MA, 3 relays "Open" 110MA, 4 relays"open" 140MA. Eight modes of operation: Non-locking (Momentary ), self-locking (Toggle), inter-locking(Latch), 5/20/60/120/250-second delay. The default control command is 1/2/3/4. Example: Dial 1 to control relay 1, dial 2 to control relay 2, dial 3 to control relay 3, dial 4 to control relay 4; control commands can be changed any 1-4 bits. (For more details, refer to "AD22B04_4 channel DTMF controller commands setting manual "). Specifications: Size: as the picture Weight: 72g Maximum load: 10A/250VAC ,10A/125VAC,10A /30VDC, 10A /28VDC ,10A /12VDC Package Included: 1 x 4 Channel DTMF Tone Signal Decoder Relay 1 x cable