Orbit ESSE-B-2-R-AC LED Surface Edgelit Exit Sign, Black Casing, 2 Face, Red Letters, AC Only Choose Pack:4 Pack 21W / 30W / 38W

21W / 30W / 38W

Powerful Performance: 3-phase 4-wire system with a dual voltage rating of 120/240V or 120/208V (225A)

equipped with 3 poles and a voltage rating of 240VAC

which just means they work in various setups

Orbit ESSE-B-2-R-AC LED Surface Edgelit Exit Sign, Black Casing, 2 Face, Red Letters, AC Only Choose Pack:4 Pack 21W / 30W / 38WCategory Exit Signs Page J11 Features: Dual Voltage Input 120 277VAC Operation UL Listed for Damp Location Long lasting, Energy Saving LED Lamps 90 Minutes Minimum Emergency Operation (EB Only) Premium Grade Extruded Aluminum Housing Aluminum Canopy for wall, ceiling or end mounting included Field applied Chevrons Included UV Stabilized ultra clear acrylic Edge Lit Panel Mirror divider on double face versions Single Face Panels are Clear, Double Face