Mechanical Interlock Switches: Switch Type - Machine Guard Interlock, w/Solenoid; Switch Style - Actuator Key; Enclosure Rating - IP67; Construction - Aluminum Die Cast; Connection - 1/2"NPT; Voltage Rating - 250V AC; Contact Rating - 4A; Actuator Contacts - 2NC; Actuator Style - Straight, Rigid In-Line; Operating Temperature - -22 to 140 deg F (-30 to 60 deg C); Additional Information - Contact Material: Silver-Nickel Alloy, Solenoid: 1 NC 1 NO, 24 VDC, Locking Configuration: Spring Lock, Solenoid Unlock; Manufacturer Series - SI-QM100