Can I use a higher temperature switch as a replacement

What is the thread size for the coaxial connection

Robust Construction: Designed to withstand high-ambient temperatures near the combustion collector box

leading to "false-no-flame" lockouts

If the sensor remains open during heavy frost

Johnson Controls T-4000-2140 Plastic Cover Can I use a higherThe Johnson Controls T 4000 2140 is a high durability beige plastic cover engineered specifically for horizontal mounted thermostats within the T 4000 series pneumatic control family. This rugged thermostat cover provides essential protection for bimetal sensing elements while maintaining a professional aesthetic with the integrated Johnson Controls logo. Designed for utility and precision, the faceplate features a high visibility F C thermometer for