These are primarily used by the public in disabled refuge areas, which should be provided on or near all protected stairwells to allow the orderly evacuation of people requiring assistance.
Refuges are not just for wheelchair users, but for all people who may slow the egress of evacuees, and typically refers to those who cannot walk 200 m without stopping or aid.
The unit fits in a standard UK style double socket back-box and has a green flashing button to attract attention, especially in low light environments,it flashes red when ringing and is solid red when a call is connected.
Hands free full duplex operation, high volume ringer, red status LEDs in call button, green flashing call button for location, braille enhanced call button
22 x 146 x 86 mm