Mobile phones in mosques

The idea is that when someone enters the Mosque with his phone switched on, ie on standby, the detector discovers it and  calls out gently, very nice and polite  in Arabic "please observe quiet here, please swich off your mobile phone, thank you". I think this is a good idea and will improve things in the Mosques everywhere. Where can we buy this detector as it doesn't say on that website I mentioned above. I think it's called cellphone detector plus?

Community wrote: The faithful are one community, and He saves them in this life and the hereafter.

community i am confused, are u mulsim ?