The Best Box is a simple box guarding telephone line voltage and when the line voltage is strong, then Best box connects this phone line to other device in delay. This feature can be effectively used in Siemens PBXs in case you use on an analog extension products powered from this line. Exact case of use is PBX Door phone powered from the line. The PBX from saving energy reasons testing its lines and up certain rules those extensions disconnect from power supply. In other case after PBX reset (for example: power supply failure, restart, etc…) the PBX test all lines and where detects any consumption on the line, then puts it out of order. The Door Phone powered from the line has consumption because charging his operation capacitors and also make restarts. In those cases the door phone powered from the line goes out of order until somebody doesn’t disconnect and connects the line again.The Best Box permanently monitors the voltage on the line. When the voltage decreases, then the Best Box disconnects the line and connects the door phone to its own power supply. It still monitors the line and when the voltage increases on the line, then time protection begins (default 10sec) and the line is connected again.
This product was added to our catalog on Tuesday 09 March, 2010.
LAST MINUTE OFFERS 
-> 
VIDEO DOOR PHONES ->
