• Durable materials: Flame-retardant PC shell, brass valve body. • Anti-freeze and adjustment function with liquid sensor. • No fixed temperature adjustment range, detects changes in outside temperature. • Easy installation: Remove the old valve, set up the new thermostat, and install. • Wide use: For heating equipment in homes, offices, and factories. • M30 x 1.5 threaded connection. • Check compatibility before purchase.