This works really well. It has a good range and has lots of options for the door open alert signal, from just a silent blue light that lashes twice, to incrementing adjustable volumes of lots of different tones. It comes with two sensors, both with a battery, so you could alarm two doors (or windows) if you wish. It is well made and good quality. I would definitely highly recommend this product. +++++
Verified purchase: Yes | Condition: New
Good product
Verified purchase: Yes | Condition: New
Great thanks
Verified purchase: Yes | Condition: New
Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best-selling in Door & Window Sensors
Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Save on Door & Window Sensors