... frequency: 266MHZ-433MHZ4.Receiving sensitivity: -95dB5.Encoding type: Fixed code6.Encoding way: by soldering7.Working mode: Nonlock, interlocking ... A first time, the receiver relay is on, press button A again ,the receiver relay is off, ... A is on, the relay B/C/D is off.Press remote button B, the receiver relay ... on, the relay A/C/D is off.Press remote button C, the receiver relay C is on, the relay ...