Specific for HVAC applications, this Temperature Probe (and other Klein K-Type Accessories) extend working temperature ranges for Klein's HVAC Digital Multimeters and Clamp Meters. These accessories work with all Klein digital multimeters and clamp meters that measure temperature, as well as any other brand with meters that measure temperature. Other accessories include Temperature Pipe Clamp, High Temperature Thermocouple Wire and Banana Plug Adapter.