Honeywell 121371L Immersion Well Mounting Flange, Copper, Copper, 1 2 in External Thread Size CL203 1 megaohm Standards Not Applicable 1 megaohm Standards Not Applicable Live Circuit Voltage Greater Than25V AC Display Screen Type LCD Battery Chemistry Carbon Zinc Maximum Operating Temperature 104 Degrees F Minimum Ground Resistance Measurement Not Applicable Test Current Less Than2mA Number of Records Stored 18 Timed Ramp Voltage Test No Minimum DC Current Measured Not Applicable USB Data Download Included No Input Impedance 10 megaohm PI DAR Testing Yes Pass Fail Selection Limits Yes Remote Test Probe Included No Backlit Digital Display Yes Testing Functions AC DC Voltage Control Range 60 Degrees to 90 Degrees F Element Type Bi Metal Single Temp Connection Material Copper Application HVAC Replacement Components