We sell"Little safe guard"wireless security alarm system(Components): Main Unit  Wireless PIR Detector   Wireless Curtain PIR Detector(Selected) Wireless Door Gap Detector  Remote Controller   larm Siren  Wireless flammable gas Detector( Selected )   Wireless Smoke Detector( Selected Four major functions Guarding against theft If intruder comes in the room, the working alarm system will automatically dial the designated 4 (mobile) telphone numbers to alarm center and owner. After the alarm signal sent out, the alarm siren give out an ear-piercing sound in order to frighten thief. First aid alarming In an emergency, you may press the first-aid key of remote controller .The alarm siren works and the system automatically dials designated 4 phone numbers. Gas leak alarming "Little Guard" can work with gas detector.When there is the flammable gas leakage in the room, alarm system will give the alarm message in time. Smoke alarming "Little Guard" can work with smoke detector and send out the fire alarm.