Various Telecommunications – The LDB-3 Advanced Loop Detector monitors an analog phone line for ringing or an off hook condition. A built-in relay can be activated when either of these conditions are detected. This is ideal for ...
Various Telecommunications – Battery Booster - TBB-1B - TBB-1B Battery Booster - Power Adapter - Screws - 2 Year Limited Warranty - Passes original ringing through to the device - Boost talk battery loop current up to 26mA - ...