Zoyi ZT‑203 is a Pen‑type 6000‑count True‑RMS digital Multimeter with auto/manual ranging, NCV, flashlight, and CAT III 600 V safety rating, designed for compact one‑hand use in automotive and general electrical/electronics maintenance. It measures AC/DC voltage, resistance, capacitance, frequency, duty, continuity, and diodes, with 550 V overload protection on most ranges (current modes excluded on some specs).
Features
- Pen‑type body with side buttons for range/function selection; optimized for one‑hand operation and probing in tight spaces.
- 6000‑count LCD display with backlight, about 3 readings/second update rate, automatic polarity display, and low‑battery indication.
- True‑RMS measurement for accurate AC readings on non‑sinusoidal waveforms.
- Auto‑ranging and manual range selection; data hold and auto power‑off.
- NCV non‑contact AC voltage detection and built‑in flashlight for dark or cramped work areas.
- Safety: CAT III 600 V, with 550 V overload protection on voltage/ohms ranges (some listings note current ranges excluded from this protection).
Measurement Functions and Ranges
- DC voltage: typical ranges 600 mV / 6 V / 60 V / 600 V / 1000 V on some specs; automotive‑oriented listings emphasize up to 600 V in normal use.
- AC voltage: similar ranges, often 6 V / 60 V / 600 V / 750 V.
- mV ranges: 60 mV / 600 mV AC and DC for low‑level measurements.
- Resistance: 600 Ω / 6 kΩ / 60 kΩ / 600 kΩ / 6 MΩ / 60 MΩ.
- Capacitance: roughly 9.999 nF / 99.99 nF / 999.9 nF / 9.999 µF / 99.99 µF / 999.9 µF / 9.999 mF (10 mF class maximum).
- Frequency: 99.99 Hz / 999.9 Hz / 9.999 kHz / 99.99 kHz / 999.9 kHz / 9.999 MHz.
- Duty cycle: approx. 1–99% (where specified).
- Diode test: forward current around 5 mA, forward voltage up to about 3 V.
- Continuity: audible beeper for low‑resistance paths.
Important Advantages
- Compact “pen‑style” form factor reduces clutter on the bench and is convenient for field and automotive work, compared with classic brick‑style DMMs.
- True‑RMS plus 6000‑count display improves reading accuracy and resolution for modern electronics and non‑linear loads versus cheaper 2000‑count average‑responding pens.
- NCV and flashlight make it useful as a quick safety checker and general electrician’s tester, especially in distribution boxes, dashboards, and equipment cabinets.
- CAT III 600 V and 550 V overload protection give adequate protection for typical low‑voltage and building‑level circuits when used with proper practices.
- Comes as a complete kit with probe lead, crocodile clip, carry bag, and manual, making it ready to deploy as a single‑handed test solution.
Package Content*
1x ZOYI ZT-203 Pen-Type True RMS Auto-Range Digital Multimeter
