The NK-RP1 offers a reliable, fault tolerant and fail-safe option for NK Series routers and peripheral devices. The NK-RP1 supplies redundant power for up to 4 routers and devices for a total power consumption of 100 watts. The NK-RP1 provides GPI outputs to indicate alarms, in the event a power supply has failed. The heartbeat LED on the front of the unit also blinks if a PSU has failed. During normal operation, the design of the NK-RP1 enables balancing of the power load, delivering high reliability to all connected routers and devices. When configured as a dual redundant positive and negative power supply, the NK-RP1 has greater than 80% efficiency as a negative power source, providing both efficient and low-temperature operation. The NK-RP1 comes standard as a positive power rail supply. A negative power rail option may be installed as an upgrade by simply removing the front panel and inserting the NK-RP1-NEG option card (required for NK-A16/32 and NK-V16/32 router levels).