Multifunction Magnetic Door Window Sensor anti-theft alarm GSM Sound Activated Monitor Home Security (tool)
This GSM BUG I used to secure an object. Since the object but 5 windows or TÃ'ren has I have extended the bug with reed contacts. The internal 300mA battery I have exchanged an external 3000mA cell and so the operating time of my GSM BUG to the fact
