This Bell 80D from BT, is suitable for external use in noisy environments where loud ringing is required. Can be wired into standard BT telephone socket.
Ideal for outdoor noisy areas such as workshops warehouses etc where the telephone ring needs to be at a high volume in order to be heard.
Telephone lines usually have a REN of 4 ~ they can operate up to four telephone products (e.g., phones, fax, answering machine) each with a REN of 1. This product has a REN of 1. Please note we also have REN Boosters available if your REN exceeds 4.
Please Note - Specialist installation recommended
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