The Tridonic EM 35A Basic is an emergency lighting supply unit for linear and compact fluorescent lamps from 10 to 38 Watts. Properties of Tridonic EM Basic Ballasts: – 3 hour rated duration – Can be used with all electronic ballasts, both dimmable and non-dimmable – Suitable for use in combination with magnetic ballasts – 5 pole technology 4 pole lamp changeover and delayed power switching to the ballast – Optimised AC output voltage for TC-DD and TC-L lamps – Optimised DC output for T8 lamps – Green charge status display LED – Checking the emergency lighting function by interruption the unswitched phase – Optional test switch – Battery connection – Polarity reversal protection for battery