System features Modular design allows for easy upgrade to different models, unnecessary prime cost be reduced. European switches inside, high sensitivity, long life with gold-plated connectors. Anti-water/shock/dust pc case, suitable for the worst environment with international ems button on the top. Internal antenna design both in transmitter & receiver, aviod the possibility of brake. Transmitter Frequency range : fsk868mhz(20ch), fsk433mhz(20ch), fsk418mhz(20ch). Chznnel spacing : it depends on frequency. Transmitting power : < 10mw. Antenna : internal type, impedance as 50 184. Security codes : 256 sets. Operation temperature : -10161227c ~ +70161227 Enclosure : ip65 Source voltage : 4xaa(1.5v)alkaline batteries Size : 215x70x50 mm(c1-6pb) Weight : 488g(c1-6pb) Receiver 161241source voltage : 4xaa(1.5v)alkaline batteries. Standard export package
