Description
Paying for a dedicated phone line just for your elevator emergency phone or security alarm dialer is an unnecessary expense when you can share an existing line. The Viking LSR-1 Line Seizure Relay lets a priority emergency device share a standard C.O. line or analog PABX/KSU station — and when the emergency device needs the line, it takes over instantly, interrupting any call in progress and delivering fresh dial tone right where it's needed.
The LSR-1 sits between your existing phone line and the emergency device. During normal operation the line is available for regular use. The moment the emergency phone or alarm dialer activates, the LSR-1 seizes the line and gives it over — no delay, no manual intervention. When the emergency call ends, the line returns to normal operation automatically.
Our Expert Take: The LSR-1 is one of the most cost-effective ways to bring an elevator emergency phone or alarm panel onto an existing line without sacrificing reliability. It's a set-it-and-forget-it device — once wired in, it just works. Verify compatibility with your specific alarm or emergency phone dialer before installation.
Key Features
- Allows a priority emergency device to share an existing C.O. line or analog PABX/KSU station
- Automatically seizes the line when the emergency device activates
- Interrupts any call in progress to give the emergency device immediate line access
- Returns line to normal operation automatically after the emergency call ends
- Eliminates the need for a dedicated phone line for emergency phones or alarm dialers
- Compatible with elevator emergency phones, security alarm dialers, and similar priority devices
Technical Specifications
- Function: Line seizure relay for priority emergency device
- Compatible Lines: Standard C.O. line or analog PABX/KSU station
- Operation: Automatic — activates when emergency device seizes line


