The FNIRSI MT-40 is a compact, all-in-one digital multimeter built for accurate and versatile electrical testing. Featuring True-RMS technology with 4000 counts, it delivers precise readings for both AC and DC voltage up to 600V, resistance up to 40MΩ, capacitance up to 40mF, and continuity testing. It also includes handy extras like non-contact voltage (NCV) detection, live-wire identification, electric field (EF) sensing, and battery testing. A large backlit LCD display ensures clear visibility in any lighting condition, while the smart SEL button lets users cycle through functions effortlessly instead of using a traditional rotary dial. The HOLD function locks in readings for easy recording, and the built-in temperature display adds extra convenience for everyday diagnostics. Rated MAX 600V CAT II and CE certified, the MT-40 is built with a rugged, ergonomic housing that offers a secure grip and durability for both professional and DIY use. Compact, reliable, and easy to operate, it's an ideal tool for electricians, hobbyists, and homeowners handling a wide range of electrical measurement tasks.