Features: 1. This metal adopts self-reset operation type, it has high mechanical life. 2. The housing is made of stainless steel material, more resistant to corrosion. 3. The connecting part has good performance which can make sure stable working 4. IP67 and IK09 protection level extend life and not easy to damage 5. Adopt 1 normally open and 1 normally close switch type, it is easy to use. Specification: Condition: 100% Brand new Mounting Hole Diameter: 16mm Operation Type: Self-Reset Head Shape: Flat round LED Color: Red, Green, Yellow, Blue, White (optional) Switch Rating: 5V, 12V, 24V, 220V (optional) Housing Material: Stainless steel Switch Combination: 1NO 1NC Protection Level: IP67 IK09 Light Pattern: Ring Optional Style: Red Light 5V, Green Light 5V, Yellow Light 5V, Blue Light 5V, White Light 5V, Red Light 12V, Green Light 12V, Yellow Light 12V, Blue Light 12V, White Light 12V, Red Light 24V, Green Light 24V, Yellow Light 24V, Blue Light 24V, White Light 24V, Red Light 220V, Green Light 220V, Yellow Light 220V, Blue Light 220V, White Light 220V Package List: 1 x Metal Button Package List 1This metal adopts self-reset operation type, it has high mechanical life. 2The housing is made of stainless steel material, more resistant to corrosion. 3The connecting part has good performance which can make sure stable working 4IP67 and IK09 protection level extend life and not easy to damage 5Adopt 1 normally open and 1 normally close switch type, it is easy to use.