Infraredalarmsystemcanbeusedtodetectthemovementtoagainsttheintruderintheroomorhouse，whenthesystemtriggered，Itwillsoundin105dbandthealarmsoundlastfor30second，Thisalarmsystemusingadualinfraredsensorswithspecialinfraredintegratedcircuit，havethelowfalsealarmrate，highreliability，highcostperformancecharacteristics，suitableforhome，office，garden，andstreetstoresandotherplaceswithanti-theftorintruder. Installationrequirements: 1.Becauseofthehighestsensitivityofthelensinthebodylateralmovement，andtheverticalmotionsensitivitypoor，sointheinstallation，youshouldpayattentiontotheanglebetweenthehorizontalandheightdetectors，whichhavegreatimpactontheprotectedarea. 2.Whenyouinstallation，avoidedneartheheatsource，suchashotandcoldairoutlet，airvent，heater，aircooler，etc.，toavoidthestraightonthedoorsandwindows. 3.thescopeofprotectionshouldbeabletolookdirectly，cannothaveobstacles. 4.Thealarmintothewallshouldbe10to30degreeanglewiththelongestdetectiondistance，Somakingadjusttheangleasyouractualinstallation. Installation: 1.Thisalarmshouldbefixedinthewallof2-2.5m 2.Put4pcsAAAbattery 3.Turnthealarm，andmakeadjustoftheangel Technicalparameters: 1.Power:DC6V(4pcsAAbattery) 2.Alarmsoundloudness:within1meterofnotlessthan105dB 3.Infrareddetectionrange:7meters，about110degrees 4.100%brandnewandhighquality Packageincludes: 1xAlarmsensor 2xRemotecontrols 1xMountbracket