... , LED Countdown Clock, DJS-A-1, BBE LED Countdown Indicators LED Countdown Timer, LED Countdown Meter, LED ... Countdown Indicator, DJS-A-1 Features:An LED is a semiconductor device ... years, or longer, compared to just a year for a comparable incandescent light signal. LED Countdown Timers ... Chinese GB14887-2003 standards, IP65 LED Countdown Timer, DJS-A-1