Reliable UPS combination

For harsh environments where reliability is critical, the Celab SP1490 uninterruptible power supply is said to combine intelligent battery management and high efficiency power conversion in a compact ups with 56V dc telephony and 60 V RMS CATV outputs. It has a mean time between failures equivalent to over 10 years continuous full power use at 40 degreesC ambient. Battery health is automatically monitored to warn of maintenance requirements.