Features: 1. Great workmanship and compact appearance, the pattern is ring with power symbol. 3. The switch combination adopts 1NO and 1NC which has stable performance. 3. The housing is made of stainless steel material, durable and long service life. 4. The mounting hole diameter is 16mm, easy to install and remove. 5. The operation type is self-reset with blue LED light. Specification: Condition: 100% Brand new Mounting Hole Diameter: 16mm Operation Type: Self-Reset Head Shape: Flat Round LED Color: Blue Housing Material: Stainless steel Switch Combination: 1NO 1NC Protection Level: IP67 IK09 Illuminated Style: Ring with power symbol Optional Style: 5V, 12V, 24V, 220V(switch rating) Package List: 1 x Metal Button Package List 1Great workmanship and compact appearance, the pattern is ring with power symbol. 2The switch combination adopts 1NO and 1NC which has stable performance. 3The housing is made of stainless steel material, durable and long service life. 4The mounting hole diameter is 16mm, easy to install and remove. 5The operation type is self-reset with blue LED light.