The Onpow PS165P10Y31O12V is a button switch with IP67 environmental protection rating and a 6mm mounting diameter. It features a normally open, momentary action, thermo-plastic button body, with a choice of voltage rating of 12V and contact form of 1NO (Normal Open). The switch has an electrical life expectancy of 500,000 cycles and is designed for use in outdoor applications, as it is water and dust-tight.