Specifications: Equipped with high-quality LED light, the light source is soft, bright, long lasting and not dazzling. With waterproof sealing ring, and the waterproof grade reaches IP66, the waterproof performance is excellent. The equipped PC flame retardant base is very safe and reliable to use. It can be used in battery cars, automobiles, machinery and other equipment. This is a self-locking switch, when you press the button, the switch is on, when you press the button again, the switch is off, which is very convenient and practical. Item Name: Self-Locking Switch Material: Metal, Silicone Style: A Type: Ring, B Type: Power Supply Switch Voltage: 1.5V-250V AC/DC Waterproof Rating: IP66 LED Voltage: 3VDC-220VAC Protection Level: IK10 Lamp Life: 40000 Hours Work Form: Self-Locking Working Environment: -30 Degree Celsius to 80 Degree Celsius Mechanical Life: Self-Locking/250 Thousand Times Nut Torque: 5-14N.m Contact Resistance Value: Less than and Equal to 50mΩ Button Pressure: about 2.5-3N Insulation Resistance: More than and Equal to 1000mΩ Compressive Strength: 1900VACmin Connection Method: Soldering Feet Product Certification: CD ROHS Features: Waterproof, High Brightness, Long Service Life, Durable, Self-Locking Size: 3.5cm x 1.9cm x 1.9cm/1.38" x 0.75" x 0.75" (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 Self-Locking Switch 1 x Waterproof Ring