... you are not going to use it ,push the switch to "OFF" position ReceiverWear it on the OwnerPush ... the receiver to maximum reception range ,dial the power switch to "anti-lost N-ON" ,the cue tone ... ..."of waiting studying ,now dial the sender supply switch to ON ,and then the signal light of the ... well as alarms )4.Searching function Dial power switch to "search S-ON" ,then the receiver will send out ...