Industrial power supply; Compatible with 4U 19" Rackmount TI-R4U (sold separately) Provides up to 1000W of power (48V DC, 21A); High efficiency 94% and low power dissipation Built-in active Power Factor Controller; Forced air cooling via built-in DC fans Protections: Short circuit, overload, over voltage, over temperature; UL 508 approved; Built-in DC OK relay contact 100% full load burn-in test; -25° - 70° C (-13° - 158° F) operating temperature range TRENDnet's AC to DC Industrial Power Supply, model TI-RSP100048, supplies up to 1000W (48V DC, 21A) of power to industrial equipment, such as PoE switches and WiFi access points. This industrial power supply comes with active PFC and overload current protection. Industrial Applications Power network devices for manufacturing, general industrial, warehousing, surveillance, and corporate applications. 1000W Power Provides up to 1000W (48V DC, 21A) of power for PoE devices such as switches, network cameras, and access points. Operating Temperature Designed for industrial environments with an operating temperature range of -25° - 70° C (-13° - 158° F). PACKAGE CONTENTS TI-RSP100048