Wear the remote pendant transmitter around your neck and press the alarm button to alert someone in another room if you have a turn, feel dizzy or take a fall. Hearing impaired? The receiver has an LED indicator that lights up when the alarm button is pressed. The receiver is easy to install and has a range of 120 metres in open areas. Plastic, polyester cord. Pendant Transmitter 9cm x 4cm. Receiver 11cm x 6cm x 3cm; requires 3 x AAA batteries (not included).