Uninterruptible Power Supplies
Most people think that an Uninterruptible Power Supply (UPS) is used simply to protect the practice file server in the event of a power failure, but it actually does a lot more than that.
An Off-Line UPS protects against power failure, power sag and power surge. A Line Interactive UPS additionally protects against under voltage and over voltage. An On Line UPS additionally protects against switching transient, line noise, frequency variation and harmonic distortion. INPS sells all three types of UPS.