Revolution Lighting Technologies
Revolution's 40W 2-by-2-foot LED troffers with a single-barrel diffuser come in a range of color temperatures and have a total lumen output of 3,500 lm. These troffers feature an acrylic prismatic lens reflector, are UL-, DLC-, and RoHS-compliant, and have an L70 lifetime of 50,000 hours.
Inovonics: Duress Card
T&S Brass: T&S LYNC
AAF International: AstroCel III Aero
Bentley: In Concert
Russelectric: ATS Remote Annunciator RTS-RA