Faith FT335 and FT338 are 4 3/4-digit (40000 count) high-end industrial data logging True RMS handheld multimeters, designed for automated production QC, inverter/servo motor maintenance, industrial 4–20mA sensor loops, high-precision lab R&D, and long-term unattended data recording. They deliver 0.03% basic DC accuracy and 20kHz AC bandwidth, performance comparable to entry-level bench meters. Equipped with optically isolated Mini USB communication and matching FaithView PC analysis software, they support full digital testing: data logging, trend plotting, harmonic statistics, and part quality screening.