The TRMS clamp-on leakage current meter model 565 is designed to measure low AC currents, which are typically leakage currents in ground conductors. Low currents are measured using either 60mA or the 600mA range. The high sensitivity of the probe (10 microampere and 100 microampere) is possible through special jaw construction and, in particular, critical shielding of the jaws. At low measurement levels, this shielding out of the noise is critical for low sensitivity, accuracy and stability. The Model 565 may be used as a standard clamp-on meter measuring to 100A RMS, as well as AC volts and DC volts, resistance and continuity (with a buzzer). Clamp-on leakage current meter is ergonomic in design and fits well in the hand, facilitating one hand operation. The jaw size is compact yet designed to accommodate the most common conductors up to 1" in diameter. Measures 8-1/2" length by 2-1/2" width by 1-11/64" height. Operating temperature range: 32 to 104 degree F. Storage temperature range: 14 to 140 degree F.