XB4BS844 Schneider Push button
Key Specifications

• Series / Brand: Harmony XB4 
• Mounting Diameter: 22 mm cutout 
• Operator Head: 40 mm red mushroom 
• Action Mechanism: Trigger latching with turn-to-release (twist release)
• Contact Configuration: 2 NC (Normally Closed)
• Bezel Material: Chromium-plated metal
• Environmental Protection: IP66, IP67, IP69, IP69K (dust, water, and vibration resistant) 
• Operating Temperature Range: -40 °C to +70 °C (-40 °F to +158 °F) 

If you're planning an installation or purchase, let me know:

• What voltage and current rating does your circuit require?
• Are you looking for a complete unit with the contact block included or just replacement parts?