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5pcs 0.28 Inch Two-wire 2.5-30V Digital Red Display DC Voltmeter Adjustable Voltage Meter — image 1
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Geekcreit

5pcs 0.28 Inch Two-wire 2.5-30V Digital Red Display DC Voltmeter Adjustable Voltage Meter

5.05 ratings
AI Summary
Test & Measuring Module for everyday users

The 5pcs 0.28 Inch Two-wire 2.5-30V Digital Red Display DC Voltmeter Adjustable Voltage Meter by Geekcreit is a mid-range test & measuring module designed for everyday users. It features Measuring range: Two-wire DC2.50~32.0V and Power supply range: No need to supply power separately.The measured voltage <40V, higher than 40V may be damaged.. Customers praise its accurate and reliable. 100% of buyers rate it 4★ or above.

accurate and reliable
₹2,000
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Total: ₹2,000
Buying tip: A well-rounded choice at a fair price. Recommended for most buyers.
Estimated delivery: 4 Aug18 Aug
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Quick Specs

Measuring range: Two-wire DC2.50~32.0V
Power supply range: No need to supply power separately.The measured voltage <40V, higher than 40V may be damaged.
Test accuracy: ±1%. >10V error ±0.1V; <10V ±0.03V
Input resistance: >50KΩ
Working current: <30mA
Refresh rate: About 100mS once

Ideal For

Electronics projectsArduino / Raspberry Pi buildsPrototyping
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SKU: bg-1577857Category: Test & Measuring Module

About This Product

The 5pcs 0.28 Inch Two-wire 2.5-30V Digital Red Display DC Voltmeter Adjustable Voltage Meter by Geekcreit is a mid-range test & measuring module designed for everyday users. Customers highlight its accurate and reliable.

Key Specifications

  • Measuring range: Two-wire DC2.50~32.0V — reliable connection even at a distance
  • Power supply range: No need to supply power separately.The measured voltage <40V, higher than 40V may be damaged. — reliable connection even at a distance
  • Test accuracy: ±1%. >10V error ±0.1V; <10V ±0.03V
  • Input resistance: >50KΩ
  • Working current: <30mA
  • Refresh rate: About 100mS once
  • Lead length: Default 20cm
  • Dimensions: 30 x 11.5 x 9 mm

Customer Verdict

100% of buyers rated this product 4 stars or above. The most appreciated qualities are: accurate and reliable.

Why Buy from Pricio?

Pricio sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.

Feature: 
1. The wiring of this voltmeter is simple. The conventional two wires are used, the red is connected to the positive, the black is connected to the negative, and the reverse connection is protected.
2. Conventionally, no external working power supply is required, and the measuring voltage can be directly operated. The measuring voltage range is two-wire 2.50-30V, three-wire 100V.
3. Wide voltage operation, red 2.50V low and safe pressure up to 40V, more than 40V may be damaged.
4. When measuring voltages below 10V, two digits are displayed after the decimal point; when measuring voltages above 10V, one digit is displayed after the decimal point.

Package includes:
5 x Voltage meter















Setup Guide

1
Identify the pins
Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.
2
Wire to your microcontroller
Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.
3
Install libraries
In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.
4
Upload example sketch
Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.
5
Calibrate if needed
Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.