UNI‑T UT131B Palm‑Size Digital Multimeter

The UNI‑T UT131B is an entry‑level handheld digital multimeter from the UT131 series, offering reliable measurement of voltage, current, resistance and battery testing for general electronics, hobby, home or light technical use. It features a clear back‑lit LCD, continuity buzzer, diode test, and a unique built‑in battery tester for 1.5 V/9 V/12 V cells. The rugged industrial design is drop‑tested to 2 m and it meets safety category CAT II up to 250 V. :contentReference[oaicite:1]{index=1}

Key Features

• Manual range selection: Enables precise control over measurement ranges. :contentReference[oaicite:2]{index=2}
• Battery test functionality: Supports testing of 1.5 V, 9 V and 12 V batteries with load and shows “good/low/bad” status. :contentReference[oaicite:3]{index=3}
• Continuity and diode test: Built‑in buzzer for continuity, and diode/semiconductor test function. :contentReference[oaicite:4]{index=4}
• Back‑lit LCD & data‑hold: For easier reading in low light and freezing values for recording. :contentReference[oaicite:5]{index=5}
• Rugged design: Drop tested up to 2 m, protective case included. :contentReference[oaicite:6]{index=6}

Specifications (Selected)

• DC Voltage: from 200 mV → 250 V. Typical accuracy: ±(0.5% + 3 digits) on lower ranges. :contentReference[oaicite:7]{index=7}
• AC Voltage: Up to ~250 V (200 mV to 250 V) with accuracy ~±(1.2% + 3 digits) for 200 V/250 V range. :contentReference[oaicite:8]{index=8}
• DC Current: 200 µA → 10 A, accuracy ~±(1.0% + 2 digits) in many ranges. :contentReference[oaicite:9]{index=9}
• Resistance: From 200 Ω up to 20 MΩ (in some figures) with accuracy ~±(0.8% + 2 digits). :contentReference[oaicite:10]{index=10}
• Display: 2000‑count (±1,999), back‑lit LCD. :contentReference[oaicite:11]{index=11}
• Safety Category: CAT II 250 V. :contentReference[oaicite:12]{index=12}
• Power Supply: 2 × AAA (1.5 V) batteries. :contentReference[oaicite:13]{index=13}
• Dimensions & Weight: Approx. 134 × 77 × 47 mm, weight ~206g including batteries (varies slightly by listing). :contentReference[oaicite:14]{index=14}

Why Choose the UT131B?

• Offers a strong feature‑set for the price: battery testing, continuity buzzer, diode test, back‑lit screen—all in one compact device.
• Manual range selection provides more control in tricky measurement situations (less auto‑range switching surprises).
• Durable build with drop‑tested body makes it suitable for frequent mobile or field use.

Considerations & Limitations

• While capable, the UT131B is not designed for high‑voltage industrial environments—it is rated CAT II 250 V, so it’s more suited for electronics, appliances, home/DIY and light professional work rather than heavy‑duty electrical panels. :contentReference[oaicite:15]{index=15}
• Accuracy and features are suitable for general measurement, but not necessarily for precision calibration or extremely sensitive electronics where True‑RMS or specialized measurement features are required.
• Manual ranging means you need to set the correct range rather than having an auto‑range meter; this might be less convenient for beginners.

Keywords

UNI‑T UT131B, palm size multimeter, battery test multimeter, 1.5 V 9 V 12 V battery tester, digital multimeter CAT II 250V, continuity buzzer multimeter