The Signolux Tower Doorbell System Vibrating pad comes supplied with rechargeable batteries and also a mains power supply as standard. This product was designed product for people with hearing problems and informs about domestic events with a bright 360° flashing light, LED display of the event symbols and powerful tones, the volume of which can be adjusted. The vibrating pad slips under the user's pillow or mattress sheet and they will be alerted by strong vibration patterns The Signolux Tower receiver offers a choice of 16-tone sequences or melodies for acoustic alerting. These can be individually assigned to the respective events. About the size of a beverage can, self-standing and mains-independent, the Signolux Tower Receiver can be placed at different locations in the home. All Humantechnik alerting modules can be connected via the AUX socket on its back, for example, the vibrating pad, flash module, or extra sound module This system is made up of three parts, a Signolux bellpush and a Signolux Tower receiver, and the vibrating pad, this system is also fully compatible with all older Signolux transmitters