Blackt Electrotech: (BT31M1) Microwave/Radar motion Sensor Mini White 2 PC PACK

have been using these microwave sensors for about 6 months now and they are very useful and works superbly. They can be adjusted to your needs in terms of sensitivity, time delay, and range. I have 3 such sensors at home conveniently placed where not frequent movement happens.. and kids sometimes forget to switch off lights.. this is a major power saver..

As there were several robberies in the compound decided to install BlackT motion sensor with a light and buzzer alarm. Over the past few weeks it has been working very well switching on when any one moves infront of it at night. Saved a lot as watch man not needed who any way goes to sleep anyway

Performance is good. It need qualified electrician to install.

I have been using it as a security system. Installed it at the entry point of my house and connected a siren (230 V AC). Working well.

Great little product, value for money. Works well even when hidden away behind buttons and panels.