EFLARE 510 Series LED ATEX Warning Beacon - Infrared Flashing

Black body colour ?Infrared cannot be seen with the naked eye ?Available steady-on (IR520) and flashing (IR510, flash rate 165185fpm) ?A short pattern of audible beeps upon turning the beacon on confirms the beacon is operational ?Batteries: 2 x D cell (not supplied), Life: 40hrs ?Being infrared, there is no visible low battery indicator ?6 beeps indicate the batteries are fully charged. 3 beeps indicate the batteries are part-used. 1 beep indicates the batteries are very low and should be replaced