This device has a built-in xenon flash to alert you to the telephone or textphone ringing. A wall mounting bracket is available if you opt to make it a permanent installation. Supplied with a telephone connection lead and telephone doubler. You can plug in a Bellman outdoor ringer (A158) if you need a louder audible alert.
This product needs to be plugged directly into a telephone socket and is supplied with the necessary accessories to do this.