68mm temperature Gauge Thermomanometer 1.Black Steel Case with ring 2.Brass ... , 150,200,250,300,400,500,800,1000,1200,1500,2000mmConnection: 1/2”BSP center back Temperature sensor: bimetal coil Range: -80 ... , 0-50 deg C, 0-100 deg C, high temperature up to 500 deg C for option in Stainless Steel bulb and ... %Thermal response time equal or lower than 40sProtection material Work temperature -20 to 60 deg C