Mini 4-Channel GSM Human Body IR Infrared Sensor Anti-Theft Alarm - Black

Pros: Device is small,good quality,easy to setup....it can be turned on and off with SMS...which makes it ideal for securing far objects such as cotage or garage...if the sensor is activated it will call you on predefined number so you can listen what is going on there.....the device covers the area 5-8m in front of sensor (90 degrees)

Cons: No cons at all

Other: Great device which can be used for different purposes

Pros: It took only one charge for charger to stop working and I had problems to charge it with other USB devices for some reason. So I took the risk and open the alarm (it was easy) the battery in fully charge is 3.15V and they say 350mah so it has the same voltage with one 18650 battery , I cut battery wires and connect them with a 18650 battery holder and close it again (see pictures). Now its working fine and with a good 18650 battery it holds around 40 to 50 days. Of course now I have to charge battery separetely from the alarm

Cons: Only the charger and that the alarms battery holds for 3 or 4 days but with my patent both problems solved

Other: Buy it

Pros: Firstly, a was very sad, because after connect a charger, the devise automatically call last binded number, then I send sms 0000, and 1111. The Devise turning off and switch on again. and work correctly. inside a devise all made in smd, and its wonder me - the plate is sophisticated!! all components soldered by modern machine.

Cons: charger isn't Europe type - American.

Other: in the future I try to remake it for my car, i will connect it to siren, throw controller(for calling function from alert of car to my phone), and connect alerting system of devise to car alarm(for turning car siren from PIR sensor)