Tridonic Emergency Module with emergency lighting supply unit for manual testing. Ideally for linear and compact fluorescent lamps. It is compactible with all electronic ballasts. It can be used in combination with conventional magnetic ballasts. 5-pole technology: 4-pole lamp changeover and delayed power switching for the ballast. Optimised AC output voltage for TC-DD and TC-L lamps. Optimised DC output voltage for T8 lamps. Cathode heating adapted for compact lamps. Switchover relay with high-current contacts. Checking the emergency lighting function by interrupting the unswitched phase. Its having deep discharge protection, battery connection, short-circuit protected and polarity reversal protection for battery.