I have recently purchased a doorbell camera for the front door. It has the ability to ring my current doorbell but I use an intercom system with an electronic chime module. After watching many you tube videos and doing research I have determined that I must use a relay between the doorbell button and the chime module. The intercom system uses two (2) 16 volt AC transformers that are hidden behind the intercom which I would like to use to power the doorbell circuit and relay. However there are no 16 volt AC relays, only 12 V or 24 V. I could purchase a 24 Volt AC transformer, but there is no way to hide it inside the intercom master station and so it would look unsightly, and I prefer not to go that route.

Can I use the 16 V power supply with a 24 V relay, which would be 75% of the relay's rated voltage? This would not be a constantly energized relay, but only a momentary contact closure to trip the relay and complete the circuit to ring my intercom's doorbell chime. I feel this would work, but I'm checking with those who should know if there might be any problems or unforeseen consequences?