Key Switch, Type Key Switch, Switch Action Momentary, Material Stainless Steel, Finish Aluminum, Width 2 7/8 in, Rating 6A @ 30V AC/V DC, Input Voltage 12 to 24V AC/DC, Output Alternate Action SPDT Relay, Operating Temp. 32 to 120 Degrees F, Keypad No, Cylinder No, For Use With Access Controls, Includes Mounting Hardware