CE certificate with children protector 1 transmitter +1 receiver,1-2,1-3,1-4(optional)Controls up to 16 channelsEach channel can control up to 10 receiversBattery operated:12VDCFrequency:433.92MHzTransmission range:75 metersReceiver with LED indicated surge protection statusReceiver can receive the signal at hard to reach loacationWith children protector230VAC,1000W universal remote socket