... residential area, office, workshop, school, factory, museum, Hospital. bank, electric power Dept. Oil Dept, Railway Dept. financial Dept. Police Dept and ... with strobe light(backup li-ion battery optional), an adaptor(or UPS backup adaptor), one door sensor, one PIR motion detector. two ... on the wall or proper place by screw and connect power adaptor. 3. Alarm mode: First arm this siren by pressing " ...