WIRELESS INSTALLATION,EASY TO ALARM,COMPATIBLE WITH ALL SENSORS AND ALARM HOST. FEATURES:B). It goes off ... to scar away the intruders when transmitter is triggered.APPLICATIONS:a). Integrated with outdoor field, home, farm, business store, public plaza ... frequency: 3.8KH2+10%; Resistance:230-280mA4, It can work with most of our wireless sensors or detectors5. Transmitting distance:noninterference ...