AREOBAY 4 Foot 360 Watt 4000K Neutral Linear High Bay Lighting Fixture - White - 120 Volt-277 Volt - 100,000 Hours - 10kV Surge Protection - Emergency Battery Backup: Emergency battery backup will operate the fixture for 90 minutes if power fails, Wired for 120 Volt-277 Volt - Installed with Lightcloud: Lightcloud is a commercial wireless lighting control system fully developed and supported by RAB - Lightcloud Sensor Installed: Occupancy, vacancy, and closed loop daylight harvesting in one versatile sensor - Dimming - Housing: 22 gauge die formed with white powder coat finish, Y Hooks included for easy chain or cable mounting - Reflector: White painted, reflective, die formed painted steel - Lens: Polycarbonate lens - Mounting: V hooks and optional pendant mounting, AEROBAY comes with two 42" chains - UL Listed: Suitable for damp locations - DLC Listed