DUPS20 DC- UPS-Controller (allows battery sizes from 4Ah to 135Ah)

Features - Battery controller for DIN Rail UPS system. - Parallel connection to DC BUS. - Suitable for 24V system up to 20A (allows battery sizes from 4Ah to 135Ah). - Installed on DIN Rail TS35 / 7.5 or 15. - Built-in battery test function. - Battery polarity protection. - Relay contact signal output and LED indicator for DC BUS OK. - Battery Fail, and Battery Discharge. - Cooling by free air convection. - 3 years warranty.