1.operating voltage: +12VDC 2.operating current: 3mA 3.Relay external load voltage : 0 ... transmitter need within 15S, it will retreat by itself (2)the way to clear away all of KST-RF008 IDconnect ... means all of the ID are eliminatedrepeat (1),1 ,2 ,3 ,4,if you want to return to the ... comments , you can leave me a message. Universal 8-Channel lighting wireless RF remote control switch with plastic box