Digital Wall Clock Countdown Count Up Timer Large Display LED Race Timing Clock for Living Room Gym Item Type: Digital Wall Clock Material: ABS Model: CF5135C S Operating Power: DC8 to 24V Range Of Application: 9999S Power Consumption: 3W Display Mode: LED Opening Size: Approx.76 x 39mm / 2.99 x 1.54in Example: Specification: 9999 seconds Timing Mode: Power on display 0000(sec), short or external switch 3 and 5 to start timing Disconnecting the switch stops the timing and displays the current time Shorting the switch again starts the timer from 0000 (seconds) and so on. The timer stops when it reaches the full value of 9999 (seconds) (optional specification) and keeps displaying 9999 When the power is restarted, the timer is reset and 0000 is displayed, no timing.