1.alarm system,wireless alarm system,burglar alarm 2.433MHZ 3. factory direct price 4.CE certificate product name:economical home alarm systemsmodel:REH303main features:1. The system will dial 6 groups of alarm number automatically when the intruders appear. 2. The alarm horn differs to the different situations which is easy for you to judge what happens 3. Can set arm/disarm status by telephone ...