We had problems with our doorbell that was connected to the intercom system. The power supply and front door station was changed first to see if it worked but it didn't so we had the master station changed at a later date. The testing was done intensively and we're happy with the result. A few weeks later we had to change the battery on our alarm system & he came again to do so but did not charge for the service call as he was coming to collect a cheque for the previous job.

Approximate cost: $1179