I have been using this product for last 5 years. It goes bad every other month. Their spares are of worst quality. Their support staff knows only one way of fixing the issue, replace one by one part until alarm stops! Once I asked them to put the old part back after alarm stopped found that alarm was not buzzing with old part too. it was a loose connection! Had I not asked it, he would have made me buy that part too. I bought it for 13.5k and have spent at least 30k last 5 years for maintenance.! I wouldn’t suggest it for even enemies.