Wireless Bell Ringer

[papaharry582]

Hello to All,
I've been given a job at my church to install a bell in one of the classrooms and a button in the secretary's office. This will be used to let the people in the classroom know when the service is over. My problem is the classroom is in a different building across the road. I was thinking about some sort of wireless device since running a wire is out of the question. Does anyone know of a product for sale or a circuit I could build or anything else that will solve this problem. Any help I can get will be greatly appreciated.
Harry

 

[hotwaterwizard]

I used a wireless Doorbell from Walmart for my shop. my wife has the button in the house. She rings it when it is time to eat Dinner. It is about 50 feet away.
For longer range I might suggest a wireless door lock kit or remote start for a car with a 12v buzzer instead of a door lock.

 

[papaharry582]

Thanks Hotwaterwizard. Sometimes the best answers are the simple ones. (KISS as in Keep It Simple Stupid). I have a severe shortage of brain cells, but my wife takes good care of me. Thanks again.
Harry