IEI Linear Corp IEI Linear Corp IEI 212SE Style Sealed Environmental Keypad (0-212140) Additional Information Downloads iEi 212SE Installation Instructions (pdf) Manufacturer iEi Electronics / Linear Model 212SE/0-212140 Dimensions 3.00" W x 4.50" H x 1.55" D Finish Aluminum Operating Temperature -31°F to 151°F (-35°C to 66°C) Programming Keypad programmable Number of Users Up to 120 Voltage Input 12 or 24 VAC/VDC Warranty Five year warranty Weight 1.0000 212SE/0-212140 Keyless Access