The Sidekick II  Signature series from Silent Call Communications, Waterford, Mich, monitors doorbells, telephones, smoke detectors, and fire alarms within 2,000 feet and alerts people with hearing problems that there
is a visitor, phone call, or danger.

The device can help institutions and businesses comply with the Americans With Disabilities Act. The device is to be used in conjunction with any Silent Call 418MHz transmitter.

It is a useful tool for sound sleepers, as its built-in alarm can be connected to the sleeper’s mattress, causing the bed to shake when the alarm goes off.

The bright, flashing strobe and front indicator panel alerts users quickly to visitors, calls, and emergencies. If a fire or smoke alarm has a low battery, blocked path, or malfunction, the device notifies the user so corrective action can be taken. The monitor has a night-dimming backlight display so it does not interfere with sleep at night and provides alerts around the clock. 

SilentCall provides personal communications and life-enhancing systems for the deaf, deaf/blind, hard of hearing, and people out of hearing range.