pete_c
Guru
Wanting to back up my copper with a second line on my OmniPro2.
This device appears to just switch to line #2 instead of seizing line #1 measuring voltage.
Looks like I can set the time of it switching such that the panel will still get an phone line error if there is no dialtone.
The STC Model 105
Telephone Line Manager is a powered ancillary device for monitoring telephone line voltage. The device is completely isolated electrically from the monitored line by optical coupling. It repetitively interrogates the telephone voltage to determine if the voltage exceeds the preset minimum threshold. When the voltage falls below this minimum for more than the selected delay interval, the D.P.D.T. relay switches, the alarm output contacts change state, and the alarm LED lights. When any “in house” device (such as a fax, alarm panel, or computer modem) is using the telephone line, the STC 105 current monitoring circuit decreases the threshold for an alarm condition to virtually eliminate false alarms created by normal telephone equipment operation. An alarm condition will auto-restore 5 seconds after the line voltage returns to normal. The relay output can be used to directly select a second line or backup communications link, operate audible devices, trip zones on the alarm panel, or enable an “audible on line fault”. The alarm output is an opto-coupled N.O. or N.C. dry contact (selectable) designed to directly interface with the alarm panel zones. The 12 V.D.C. power needed to operate the Line Manager is derived from the auxiliary power output normally available from the control. The compression terminals are convenient to use and the double-sided foam tape mounting makes installation quick and easy. An earth ground terminal is supplied to support the lightning and spike protection circuits.
This device appears to just switch to line #2 instead of seizing line #1 measuring voltage.
Looks like I can set the time of it switching such that the panel will still get an phone line error if there is no dialtone.
The STC Model 105
Telephone Line Manager is a powered ancillary device for monitoring telephone line voltage. The device is completely isolated electrically from the monitored line by optical coupling. It repetitively interrogates the telephone voltage to determine if the voltage exceeds the preset minimum threshold. When the voltage falls below this minimum for more than the selected delay interval, the D.P.D.T. relay switches, the alarm output contacts change state, and the alarm LED lights. When any “in house” device (such as a fax, alarm panel, or computer modem) is using the telephone line, the STC 105 current monitoring circuit decreases the threshold for an alarm condition to virtually eliminate false alarms created by normal telephone equipment operation. An alarm condition will auto-restore 5 seconds after the line voltage returns to normal. The relay output can be used to directly select a second line or backup communications link, operate audible devices, trip zones on the alarm panel, or enable an “audible on line fault”. The alarm output is an opto-coupled N.O. or N.C. dry contact (selectable) designed to directly interface with the alarm panel zones. The 12 V.D.C. power needed to operate the Line Manager is derived from the auxiliary power output normally available from the control. The compression terminals are convenient to use and the double-sided foam tape mounting makes installation quick and easy. An earth ground terminal is supplied to support the lightning and spike protection circuits.