Robust latching relay provides unsurpassed and unrestricted performance Controlled by Hubbell occupancy sensors Auto or manual ON operation, 100-277V AC, 50/60Hz for use with 1 to 6 ATD, ATU, ATP, AHP and AD2240 series sensors. Powers up to six low voltage sensors Plenum rated AT Sensor/AAR Capacity 1 to 6 combined Load Capacity 20A, 100-277V; 1HP @ 120V AC; 2HP @ 240/277V Motor Loads 1HP @ 120V, 2HP @ 240/277V Housing Flame retardant UL 94-5VA thermoplastic Dimensions 4.00"L x 3.4"W x 1.73"H Hardware Included Power Output 24V DC 250mA Power Supply 120-277V AC, 50/60Hz Relay Heavy duty; magnetic latching. Silver alloy contacts. Very low standby power consumption Operating Temperature -40°F (-40 °C) to 149°F(65 °C). Below 32°F (0°C) must use suitably rated non-metallic enclosure. Listings UL/cUL 916 Listed for Energy ManagementCEC Title 24 CompliantASHRAE 90.1 compliantUL2043 plenum rated per NEC® 2014 300.22(C)(3)