Limitimer is an automated timekeeper that controls a remote signal light alerting speakers to the end of allotted time. Limitimer...Keeps time at lectures, forums and legal proceedings. Maintains pace of programs. Builds confidence that no one's time is unfairly curtailed. Spares moderators the need to interrupt and helps speakers end smoothly. Features Easy-to-use: Set Total Time. Set Sum-Up Time. Start. Digital clock displays Time Remaining; Green-Yellow-Red lights cue phase: Talk, Sum-Up, Stop. Pre-set up to 4 timing programs. Run a session timer in background to other programs. Select from 3-different beep sounds (or no sound). Connect two or more timers to a single signal light for multi-point start/stop control.. Connect tow or more signal lights to a single timer for multi-speaker prompting. Select count-up or count-down modes. Package includes the PSL-20V Podium Signal Light. The PSL-20V features an on board beeper; signal lights front and back. Additional signal lights may be plugged into on-board jack. Dimensions: 3"D x 4"W x 3"H. Note: All signal lights contain both input and output jacks (RJ45) so that they may be interconnected in a daisy chain with other signal lights to create a custom display configuration. Use ordinary Cat 5 data cable. Signal Light connections can also be made with XLR cable using a XLR to RJ45 Adapter. Kit Includes Speaker Timer System including timer, podium signal light (PSL-20V), 50 foot Cat 5 cable and power supply. Timer functions include 4 separate programs (1 may run in background) and 3 selectable audio cues ("ring", "buzz" and "ding-dong") or silent. Red light can be set to blink at program end. Other settings include count-up or count-down, count hours-minutes or minutes-seconds, stop at 0:00 or continue after end. Signal light can be set to respond to any or all programs.