描述:
External Bell 80D 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 sockets. 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 105dB sound output Screw terminal connection 4kΩ bell actuator for parallel connection Grey die cast case REN 1 Package Dimensions: 152x252x252mm ### 注 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** Specialist installation recommended.** ### Telephone Ringers
最有帮助的评价