Allen Tel Elevator/Hall Speakerphone with 2 Minute Auto-Disconnect Allen Tel elevator/hall speakerphone with 2 minute auto-disconnect is pushbutton operated, the line being linked when the pushbutton is briefly pressed. They also have a 2-minute "Time-Out" function which disconnects the contact after 2 minute. An LED is offered to indicate an "Off Hook" situation. The Allen Tel Elevator/Hall Speakerphone with 2 Minute Auto-Disconnect is for automatic ring down or dedicated lines, Allen Tel Elevator/Hall Speakerphone with 2 Minute Auto-Disconnect is developed for inside programs with area, such as lifts, car auto parking security, grounds and entrance admittance. It can be exterior attached or cleanse attached in current walls outlet boxes. It is operated by the telephone with no battery strength or AC adapter necessary. It completed in dark-colored uneven baked-on enameled. Features: Mountable in elevators Attached on a heavy-gauge established sheetsteel section completed in dark-colored prepared enamel Designed for cleanse growing where a conventional wall structure mounted phone might be topic to random damage Contains store box and ringer Does not include GB62248 decrease frame