The Netbell-NTG can play custom audio files as well as control bells and buzzers, but you can also run background music through it and interrupt the music when you need to play a message. This is done by connecting a music source such as an mp3 player or a radio to the Normally Closed connections on the relays as well as to the amplifier. Below I will show you how to do this.

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The Bell Scheduler is a useful tool for keeping your bells running at your desired schedule but sometimes you may need to run an alternate schedule. This could be if you are running a school bell and have a set schedule but then need a different schedule for a half day or an activity day. Rather than having to make sure you upload the alternate schedule before each day and have to upload the regular schedule afterwards, you can use a virtual relay to act as a toggle between different sets of times on the same schedule. Below I will show an example of how you can do this.

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