LTFRD12EM LED Fire Rated Down Light 85% Output 8hrs+.
LTSP50 Slim Panel Fittings LT BAT4 On the 350mA Inverter setting the BAT4 will last just over 3 hours at 500 lumens. LT BAT 9 - On the 5000mA Inverter setting the BAT9 will last 3 Hrs 20min at 900 lumens.
The regs require a minimum LUX level on the floor must be 100lm or greater for 3 hours duration.