Heat Detector, Rate Compensation, Finish Silver/White, Surface Mounting, Depth (In. ) 2 1/16 in, Height (In. ) 4 1/8 in, Length (In. ) 2 1/16 in, Ambient Temp. Limits (F) -40 to 100 Degrees, Coverage (Square-Ft. ) 2, 500, Standards UL, CSFM. This item has been restricted from sale in the following state (s): []