FIELDPIECE - SC440 - Dual-Display True RMS Clamp MeterFIELDPIECE SC440 Dual Display True RMS Clamp Meter SC440 A step up from the Fieldpiece SC420 Clamp Meter, use the Dual Display SC440 your way auto or manual ranging. The SC440 includes the electrical ranges technicians use for most HVAC R work, plus temperature, capacitance and duty cycle. It also has several safety features like a high voltage LED and beeper, a continuity warning, push button non contact voltage (NCV), a lead holder on the clamp, and