Tridonic Indication Green LED with emergency lighting LED Driver for manual testing, self-contained emergency lighting and LED modules with a forward voltage of 10 – 52 V. It is low profile casing. Operating time selectable with plug. Compatible with all dimmable and non dimmable constant current LED Driver. 3-pole technology: 2-pole LED module changeover and delayed power switching for the LED Driver. Automatic shutdown of output if LED load is out of range. Maximum light output for all LED modules. Electronic charge system and deep discharge protection. Short-circuit-proof battery connection. Polarity reversal protection for battery.