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 SwitchMaterial: Metal, SiliconeStyle: A Type: Ring, B Type: Power SupplySwitch Voltage: 1.5V-250V AC/DCWaterproof Rating: IP66LED Voltage: 3VDC-220VACProtection Level: IK10Lamp Life: 40000 HoursWork Form: Self-LockingWorking Environment: -30 Degree Celsius to 80 Degree CelsiusMechanical Life: Self-Locking/250 Thousand TimesNut Torque: 5-14N.mContact Resistance Value: Less than and Equal to 50mΩButton Pressure: about 2.5-3NInsulation Resistance: More than and Equal to 1000mΩCompressive Strength: 1900VACminConnection Method: Soldering FeetProduct Certification: CD ROHSFeatures: Waterproof, High Brightness, Long Service Life, Durable, Self-LockingSize: 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 item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Self-Locking Switch1 x Waterproof Ring