Wireless GSM siren in blue suitable for wireless gsm home burglar alarms

Specifications: 
1.Working power: 100~240VAC 
2.Static current: <15 mA 
3.Alarm current: <200 mA 
4.Product dimension: 105 * 65 * 35mm 
Installation and Usage: 
Switch to "On" from the back of the siren; Plug the siren into the power socket in suitableplace in the house;
(A suggested distance above from the floor is around 1.8m.) 

How to program to the alarm host 
A. To add: 
When siren power ON, press Study Buttonon the side of the siren and the siren lights turns on. 
Press emergency key on the alarm host, then (after about 5seconds) disarm by pressing keys on the host; 
The sirenlights on the siren flashes 5 times and off to indicate a successful adding. 
B. To delete: 
When siren power ON, keep pressing StudyButton for around 5 seconds and then release, the siren lights flashes once andoff to indicate a successful deleting. 

Notes: 
1. You can only add 1 wireless indoor siren at a time; 
2. For adding a wireless indoor siren,only the operations (such as making emergency alarm and disarm the system) madeby the inbuilt keypad of the host is valid. 
3. Each wireless indoor siren can workwith up to 10 wireless alarm hosts and each wireless alarm host can work withmany (as many as you need) wireless indoor sirens.