# Aofan Red LED Digital Voltmeter, 5–30V DC

Aofan’s LED Digital Voltmeter is a compact red-display meter for monitoring DC voltage in vehicle electrical systems. Its claimed 5–30V measuring range and 29mm dashboard fit are useful for installations where a small, glanceable readout is wanted, but the listed power configuration and operating limits should be checked against the intended setup.

- [Original product page](https://bargainpostbox.co.uk/product/aofan-red-led-digital-voltmeter)
- [View offer](https://bargainpostbox.co.uk/visit/aofan-red-led-digital-voltmeter)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: Aofan
- Category: Cars & Motorcycles > Vehicle Accessories
- Price: 6.39 GBP
- Previous price: 7.99 GBP
- Discount: 20%
- Price checked: 2026-11-12T17:40:02.508Z
- Rating: 4.3 / 5
- Reviews: 97

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Three-digit red LED display is claimed to show DC voltage from 5 to 30V.
- The listing claims compatibility with 12V and 24V vehicle electrical systems.
- Specified 29mm dashboard hole and nylon locking ring suit a compact panel installation.
- The listing states an IP65 rating and corrosion-resistant housing.

## Pros

- Compact panel-mounted format with a bright red numerical display for quick voltage checks.
- The stated range covers the listing’s intended 12V and 24V vehicle systems.
- A 29mm mounting hole and screw-terminal connection provide specific installation dimensions to plan around.

## Cons

- The stated ±0.5V accuracy is relatively coarse for buyers needing precise voltage measurements.

## Specifications

### Identity
- Brand: Aofan
- Measurement type: Voltmeter
- Colour: red
- Power configuration: Battery Powered
### Electrical and display
- Operating range: DC 5-30V
- Display: 3-digit red LED
- Accuracy: ±0.5V
- Compatible systems: 12V/24V electrical systems
### Construction and environment
- Water resistance: IP65
- Housing material: ABS+PC composite
- Operating temperature: -20℃~70℃
- Upper temperature rating: 70 Degrees Celsius
- Specification met: CE
### Dimensions and installation
- Mounting hole diameter: 29mm
- Dimensions: 36×16×29mm
- Weight listed: 20 Grams
- Input connection: 2-pole screw terminals
### Compatibility
- Compatible devices: Cars, motorcycles, trucks, RVs, boats, ATVs, and other recreational vehicles

## Before you buy

- The listing is inconsistent about power, describing the meter as battery powered while also specifying a wired 2-pole screw-terminal input. Its title emphasizes 12–24V, while feature text gives a 5–30V measuring range, and the detailed operating-temperature range is -20℃~70℃ alongside a separate 70 Degrees Celsius upper rating. Confirm wiring, actual system compatibility and installation dimensions for the selected listing. The overcharge/discharge language describes monitoring and detecting voltage irregularities, not automatic battery protection.

## In the box

- LED digital voltmeter (Included)

## A good fit for

- Vehicle owners wanting a small dashboard readout to monitor battery or charging voltage in cars, motorcycles, trucks, RVs or boats.
- DIY installers whose panel can take a 29mm hole and whose system voltage is within the stated DC range.

## Less suited to

- Buyers needing an automatic battery cut-off or overcharge/discharge prevention device.
- Installations requiring finer than the stated ±0.5V accuracy or a verified mounting fit without checking dimensions.

## Customer feedback

Aggregate ratings lean positive, with most ratings in the four- and five-star categories, but a smaller share is one- or two-star. Without written feedback, the reasons are unknown. Treat this as limited context rather than confirmation of display accuracy, waterproofing or installation fit, and rely on the stated range and dimensions for suitability.

## Frequently asked questions

### What voltage range does the listing specify?
The detailed description states DC 5-30V, while the title and compatibility claims refer to 12V and 24V systems. Check the range and system suitability before installation.
### What size dashboard opening is specified?
The listing states a 29mm mounting-hole diameter. It also gives overall dimensions of 36×16×29mm, so compare those measurements with the available panel space.
### Does this meter protect a battery from overcharging?
The listing says it helps monitor charging status and detect voltage irregularities. It does not establish automatic cut-off or active protection.
### What should be checked about its power connection?
The product details call it battery powered, but the description specifies 2-pole screw terminals. Confirm the actual wiring arrangement for the selected listing.

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## Images

![Aofan Red LED Digital Voltmeter, 5–30V DC — 1](https://bargainpostbox.co.uk/i/8FJOlBfk1vOgPHey6HXTgKytH6ii0RhNs9YlyRsWOfXVPuYTU7Ry1ceL-omnQCNy-SQXk4J_TVewN3ejUWKGZzDqFgOGy0__f4j-xywq-A.jpg)

![Aofan Red LED Digital Voltmeter, 5–30V DC — 2](https://bargainpostbox.co.uk/i/0CIhNeb74aMAxHrjTEaclSdNMoHiJghNIMGU5CWKrQ1oojnskFNMpf1NUN12AgrFXvw9UQ9LtjzidQtqHkCOFx5PjSQLgZzkQmKVdLgEWw.jpg)

![Aofan Red LED Digital Voltmeter, 5–30V DC — 3](https://bargainpostbox.co.uk/i/MOrF2iUJSFSi1Zis4Yk6Rop6igOU3iTFetCFCtTig-7WgT3y04_bSPKXP94eYpvr3045fm68muVSYW1LK6eQArPojTFyAaOY26-9LDdAzQ.jpg)

![Aofan Red LED Digital Voltmeter, 5–30V DC — 4](https://bargainpostbox.co.uk/i/Cl9V5SILdNKpd_fnNBmPhKs0r4DYdOm5VPrEGLkkpNhLegSm0x8bjUC0XkK9oTjN-AkM-ymY54AOjoESOLyFSNczmPHXab5i3pugfTjCbg.jpg)

![Aofan Red LED Digital Voltmeter, 5–30V DC — 5](https://bargainpostbox.co.uk/i/jMJJnnrhGOtDflO0VevfhI5SFcK7F-Db6XQjfeVTXQ5R4u1D8jjrRQqHKVeSxxZh-53devmK3arDbNnV3LdcwwLce0x2_Kp5OcEhiMw_sA.jpg)

![Aofan Red LED Digital Voltmeter, 5–30V DC — 6](https://bargainpostbox.co.uk/i/xV2OuYM3BF8IVsGGvZq-TRZDmlOT2xO0M_b8805r2jyXQQO_Sm0BkVOz1ZTYOXlfelAwyolh1sn5qUb4G0_q9UwgeizxC6XUB99T7IPJSA.jpg)

![Aofan Red LED Digital Voltmeter, 5–30V DC — 7](https://bargainpostbox.co.uk/i/toT843943PG2LPuXRSUCYCxEoDejdpvzmmcGPeco2Fuavqa52gkl66lmv7RHzWK3kmgeitEyjNpPhDyze2VM5StS9x5vWkmddvcvE_ldYQ.jpg)