The TP-NCMS series of rack mount mid span POE power sources are used for supplying POE and data to up to 12 devices from a central location such as an operations room. The POE devices feature a separate data-in port coupled with a data out/POE port which employs built in Ethernet surge suppression. The POE function is not IEEE802.3af compliant, useful for powering those devices that require a POE voltage other than 48V. The TP-NCMS412-24 has AC and DC inputs. The DC input is regulated so if running off a battery system the 24V POE to the client devices won’t exceed 24.5V. When running from DC input voltage the TP-NCMS412-24 can operate down to 12VDC and POE output voltage will equal the DC input voltage – 2V.