Electronic countdown timer for use in circuit training or similar exercise regimes where a number of countdown times can be pre-programmed into a counter device with an alarm and a time interval selection means

摘要

Countdown timer with pre-programmed time sequences, of intervals of 20, 30, 40 and 50 seconds with an audible signal (BUZZER) at the end of the countdown period. The device also includes means for selection (keyboard, switch, etc.) of time interval, trigger (START) and a luminous light indicator showing the time selected. Sequences of times can be combined and pre-programmed.