Automatic induction GSM alarm sensor with remote control PY-JS311

Automatic induction GSM alarm sensor with remote control PY-JS311   1.Arming and disarming by remote controller   2.Prompt alarm with high db   3.Both AC and dc low power caution   4.Use indoor only and install on the suited position. Somebody enter into room lawlessly it will alarm promptly.   5.Suitable for houshold, office, shop,etc.     Features and Specification:   1. 1 PIR with 2pcs remote control   2. Automatic induction, the sound set off as soon as a thief shows up and it keeps silent when he leaves.   3. Time delay of electricity: 20 seconds   4. Alarming transmitting: 60 seconds, intermission: 2 seconds   5. Detecting range: 8m, detcting angle: 110 degree   6. Degree of sound: 120db