Features: 1.Four channel frequency adjustment function,suitable for stack installation in the same place 2.Widespread used,for alarm system,access control system etc. 3.Small and beautiful appearance for INFRARED BEAM SENSOR ALARM 4.Unique design of the digital filter circuit 5.With high levels of anti-RFI / EMI capability 6.Professional anti-jamming optical housing 7.Sealed design to anti-rain (fog), dust (worms) and other integrated weather, can keep normal operation in harsh environment Specifications: Product name Infrared beam sensor alarm Model ABO-10F Alert distance 10m Beam 1 Working voltage DC 9-16V Input current R-18mA;T-20mA Frequency 38KHZ Relay output 1A 36V max Wave length 940nm Humidity 5%-95% RH Operating temperature -25~+55Deg.C Case material PC Dimensions 68*25*20mm Package includes: 1 x infrared beam detector 1 x bag of install tools