Display for LM-24M. The LM-24S System provides a visual status of up to 24 lines or stations. If a line or station is in use, the corresponding LED will light steady, a ringing line or station will show a flashing LED. Even if a ringing phone is out of hearing range, a common audible tone calls the operator s attention to the visible display. The tone is adjustable for convenient operation. The LM-24S Line Status Monitor System is designed for professional and efficient call processing at department answering positions, message centers and back-up attendant stations. Each LM-24S Line Status Monitor System includes one LM-24D Display and one LM-24M Scanner. Applications Ideal for areas where personal attention must be given to every call Eliminates the additional cost of adding a PABX console or key system Allows for full utilization of all call pickup features Monitors the status of lines or stations Features Visual status for up to 24 analog lines or stations (idle, in-use, ringing) Programmable ring indication on a per-line basis Adjustable display viewing angle for desk or wall mounting Displays require only a single pair of wires Powers up to (3) LM-24D or LM-12W displays User printable extension identification cards Adjustable audio volume Quick installation Includes both the display and the scanner One year warranty Made in the USA.