Features: 1. The mounting hole diameter is 16mm, easy to install and replace. 2. Great workmanship and compact appearance, the pattern is the ring with power symbol. 3. The switch adopts 1NO and 1NC method which can provide stable performance. 4. The stainless steel material of housing is durable and has long service life. 5. The operation type is self-reset with white LED light. Specification: Condition: 100% Brand new Mounting Hole Diameter: 16mm Operation Type: Self-Reset Head Shape: Flat Round LED Color: White 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 1The mounting hole diameter is 16mm, easy to install and replace. 2Great workmanship and compact appearance, the pattern is the ring with power symbol. 3The switch adopts 1NO and 1NC method which can provide stable performance. 4The stainless steel material of housing is durable and has long service life. 5The operation type is self-reset with white LED light.