Byron Portable MP3 doorbell MP001, 100MB memory for individual ringtones, up to 30 meters range (tool)
Hello, own 2 of these cordless doorbell. Reach as about 30m without problems bell on the 1st floor value also works Positive: design, ease of use, clamp "Installation", mp3 capable lautstàrke adjustable (= very loud very loud :)) no slots / wall