An audio door entry system allows the user to speak with their visitors without opening the door. An advantage of this system is that one or more exterior entry panels can be connected to a number of internal handsets.
Sparks Electrical Wholesalers Ltd, 659-661 Holloway Road, Archway, London, N19 5SE, United Kingdom
Registered in England. Company No. 2238028. VAT Reg No: GB 505 6899 17. Copyright © 2003-2016 SparksDirect