Joy-IT DVM3-30R Digital Panel Voltmeter DC 0-30V LED Red

Monitoring DC voltage in tight panel spaces often means choosing between bulky meters and imprecise readings. The Joy-IT DVM3-30R solves this with a compact, self-powered voltmeter that fits a 35 x 23 mm cutout and reads directly from the measured circuit—no separate supply needed.

Who is it for

Makers, technicians, and equipment builders who need a simple, reliable DC voltage display in control panels, power supplies, or DIY electronics. Its red 3-digit LED is readable at a glance, and the 2-wire connection keeps installation straightforward.

Main features

• Measures DC voltage from 0 to 30 V with ±1% accuracy (+1 digit)
• Self-powered from the measurement line (4.5–30 V DC), no external supply required
• Bright red 0.36-inch 3-digit LED display
• Panel-mount design with 35 x 23 mm cutout
• 2-wire connection with polarity protection
• Low current consumption under 20 mA
• Input impedance greater than 100 kΩ
• Operating temperature range: -10 to 65 °C

Specifications

• Measurement function: DC voltage
• Measurement range: 0–30 V DC
• Display type: LED, red
• Display digits: 3
• Display size: 0.36 inch
• Accuracy: ±1% (+1 digit)
• Operating voltage: 4.5–30 V DC
• Refresh rate: approx. 500 ms
• Input impedance: >100 kΩ
• Current consumption: <20 mA
• Operating temperature: -10 to 65 °C
• Mounting: panel mount, cutout 35 x 23 mm
• Connection: 2-wire
• Polarity protection: yes
• Housing material: plastic

Tips

For best accuracy, ensure the measured voltage is within the 4.5–30 V operating range. Connect red to positive and black to negative—the built-in polarity protection prevents damage if reversed.