Specifications: This limit switch with small and compact size design has long mechanical life, and the wiring is easy and the terminals are completely open. It features high precision and high reliability, practical to use. With dust-proof, waterproof and oil-proof functions, the degree of protection is IP65, this limit switch is very durable and safe to use. Item Name: Limit Switch Material: Plastic, Metal Model: TZ-8167 Contact Resistance: 25m&Omega; Maximum (Initial Value) Insulation Resistance: 100m&Omega; Minimum (500V DC) Dielectric Strength: 100V AC, 50/60Hz for 1 Minute between Terminals of Same Polarity 1500V AC, 50/60 HZ, for 1 Minute between Current-carrying and Non-current-carrying Metal Parts 1500V AC, 50/60 Hz, for 1 Minute between Each Terminal and Ground Vibration: 10-55HZ, 1.5mm Double-amplitude Shock Mechanical Durable: 1000 m/s&sup2; Malfunction: 300m/s&sup2; Ambient Temperature: -5 - 65 Celsius Degree Humidity: < 95% RH Degree of Protection: IP65 Features: Durable, Compact, Waterproof, High-precision Size: 17.2cm x 3cm x 2.5cm/6.77" x 1.18" x 0.98" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Limit Switch 4 x Screw 4 x Screw Nut