More informationEmergency lighting LED driver ¦ Electronic circuit board ¦ Emergency lighting function for manual testing, self-test or DALI autotest ¦ EM = Emergency ¦ Output power 1.5 W ¦ Very low stand-by power loss ¦ Non maintained operation ¦ 3 h rated duration ¦ Plug-in Lithium Iron Phosphate battery ¦ 5 years guarantee electronic (LED driver) (conditions at www.tridonic.com) ¦ 3 years guarantee battery for EM R2A NM BASIC ¦ 4 years guarantee battery for EM R2A NM ST/PRO