Multipurpose – it’s not only for vehicles, ideal for other applications, like in the home, camping, motor home or even in a boat. Protects your property and provides more safety. This interior monitoring system is also portable, so you can bring it anywhere, even in your camping tent PIR Motion Detection - automatic alarm triggering at motion detection with detecting range 120° cone angle. Loud 110 dB siren will scare potential thieves and gives you time to take your advantage against intruder. Built in rechargeable 450 mAh battery with 6 days of standby time and charging time about 3-4 hours makes it really easy to use Remote Control – to activate/deactivate the alarm from ~8m distance (open areas). Alarm time up to 2 minutes (maximum). Also this car siren is very compact, so you can store in anywhere or just put into your pocket to carry it over another place to protect Unique Design – designed in Germany this little alarm has an unique design, so intruder never recognize the PIR alarm system in device, that looks like common car charger, so it will be surprise moment and that’s how it works Charging Function - 2 USB charging ports with 5V/1A output power each allows you to charge 2 devices at same time using cigarette lighter socket like input DC 12–24V. Also it has over current protection 2.8A & short circuit protection, so you should not be afraid of injuring yourself or damaging your smartphone, tablet, etc. Charging function works only with cigarette lighter car input, but alarm feature works without any wires or inputs