IEI Linear Corp IEI Linear Corp IEI 212w Style Flush Mount Weather Resistant... Additional Information Downloads iEi 212w Installation Instructions (pdf) Manufacturer iEi Electronics / Linear Model 212w/0-211222 Dimensions 2.75" W x 4.50" H x 1.13" D Operating Temperature -20°F TO 130°F (-28°C TO 54°C) Programming Keypad programmable Number of Users Up to 120 Voltage Input 12 or 24 VAC/VDC Warranty Five year warranty Weight 1.0000 212w/0-211222 Keyless Access