Model: TC-100 - Can be installed in home companies shops and warehouse when a thief open your door or window move your car or your valuables the alarm will notify you ensure family life and property - Selectable network: GSM900MHZ/DCS1800MHZ; GSM850MHZ/DCS1900MHZ - GSM module with voice-activated automatic pull back function - Compact size voice clear long standby time simple operation stable performance - Built-in 600mAh lithium battery - Interfaces: USB 5pin + SIM card slot - Package included: - 1* Host - 1* Magnet bos (Magnetic sensor) - 1* 100~240V power adapter (2-flat pin plug) - 1* USB charging cable - 1* English/Chinese user manual