... in.COMPOSITE CIRCUIT DESIIt uses infrared for counting and has strong immunity against disturbance.ALARM INDICATIONIndicator ... ,government buildings, schools,hospitals, conference,nightclubs,sport events,and anywhere you need securiy.power Supply:AC 100-240V ... 222x88x73cm,Weight:Approx.52kgTS1230,SPECIFICATONZone Number :1zonesAlarm :Sound and LED lightSensitivity :0-255 sensitivity degree, 4 ...