With the MP3 doorbell MTK2, you can play up to 20 different MP3 tones via a microSD card. Additionally, there is an optical signalization through an RGB LED. The doorbell features a powerful audio system, allowing the compact device to produce a very rich and pleasant sound. The signaling can be done using a large RGB LED in a desired light color. The MP3 doorbell can be integrated into almost any doorbell system and offers multiple connection options. Thanks to its battery operation, the doorbell can be used independently, so an existing doorbell transformer is not additionally burdened.

The battery-operated MP3 doorbell with microSD player and powerful Class-D amplifier provides optical signaling via RGB LED. You can choose from up to 20 sound files on the memory card, as well as one sound file that is pre-stored from the factory. There are 4 playback modes: the same melody for each ring, sequential playback of the sound file list, random order, or playback of the internal sound file. The LED signal color is selectable.

Configuration is simple via a menu supported by voice prompts. The triggering can optionally be done by an external doorbell button or doorbell voltage. Integration into 2- or 3-wire doorbell systems is possible, as well as the selection of the triggering contact (normally open/normally closed).