Switch mode buffer power supply unit (with a transformer) PSBEN/LED series. Dimensions: 335 x 355 x 178 mm. Uin=230VAC/50Hz, Uout=2,8A/13,8VDC - for grade 1,2; 1,33A/13,8VDC - for grade 3; 5A/13,8VDC - for general application, tamper: 2xNC, 40Ah. Anti-sabotage protection, space for battery 12V SLA, UVP (battery protection). Technical outputs: EPS (AC failure), PSU (power supply failure) and APS (battery failure). EN50131 Grade 1, 2 and 3 compliant.