The Klein Tools K-Type Thermocouple is intended for use as a replacement for meters with mini-plug inputs for thermocouples, such as Cat. Nos.CL440, CL445 and IR10. It also works with any clamp meters or digital multimeters measuring temperature with lead inputs (banana plug adapter Cat. No. 69146 required). The 40-Inch wire measures temperature from 32 to 482-degree F (0 to 250-degree C). This replacement K-Type thermocouple is part of a full line of Klein Tools meters and testers, designed by electricians for electricians.