The Elma BM251 multimeter is a versatile handheld device for professional electrical applications. This instrument measures current, voltage, frequency, resistance, and continuity with high precision. It features integrated non-contact detection of electric fields, allowing for safe detection of electromagnetic fields from computer monitors or as a non-contact voltage detector. The multimeter offers optional automatic or manual range selection, intelligent auto shut-off, relative measurement, and data hold functions. With PC communication capability and optional Windows software, the instrument supports online data logging for comprehensive analysis. Safety features include warnings for incorrect connections and high-performance fuses, complying with IEC 61010-1 CAT III 600V safety standards. Technical specifications include voltage measurement from 0 to 1000 V AC/DC with DC accuracy of ±0.5%+2D and AC accuracy of ±1.0%+3D. Current measurement ranges from 0 to 10 A AC/DC with DC accuracy of ±0.5%+3D and AC accuracy of ±1.0%+3D. Resistance measurement covers 0 to 60 MΩ at 600 V, while frequency measurement spans from 10 Hz to 50 kHz. The device features a 3 5/6-digit display with a maximum reading of 5999, powered by two included 1.5 V LR03 batteries. Its dimensions are 161 x 80 x 50 mm, with a weight of 340 g. The package includes a rubber protective cover, test leads, batteries, and a user manual, making it suitable for various electrical testing and diagnostic applications that require reliable performance and comprehensive measurement capabilities.