Description
Product Overview
The VBR-20 DLI Meter is a compact, high‑precision light measurement device designed for horticultural professionals and researchers who need reliable daily light integral (DLI) data. Housed in a durable ABS enclosure measuring 7.36 x 3.15 x 1.73 inches and weighing only 4.6 ounces, the meter is lightweight enough for handheld use yet robust enough for outdoor conditions. Powered by two AAA batteries (included) that last up to one year, the device connects via Bluetooth to a dedicated smartphone app, enabling real‑time data logging, historical data review, and file export. The meter quantifies photons received per square meter per day, presenting results in mol/m²/d, and supports a full range of lighting environments—from full sun (>20 mol) to deep shade (<10 mol). Its flower‑shaped design not only looks appealing in a greenhouse but also minimizes shading of the plants being measured.
Usage
Whether you are managing a commercial greenhouse, a vertical farm, a research greenhouse, or a field trial, the VBR-20 adapts to any lighting scenario. For indoor growers, the meter can be placed on a bench or hung from a support to monitor supplemental LED lighting, ensuring crops receive the optimal DLI for maximum yield. Outdoor applications include measuring natural sunlight variations across seasons, helping growers adjust planting dates or select shade‑tolerant varieties. The Bluetooth‑enabled app works without an internet connection, allowing data collection in remote locations. Users simply pair the meter with their smartphone, start a measurement session, and the app automatically records the DLI values, timestamps, and environmental conditions. After a 180‑day period, the accumulated data can be exported as a CSV file for analysis in spreadsheet software or integration with farm management systems.
Why Choose Us
De‑Power is a trusted manufacturer in the industrial and scientific instrumentation market, known for delivering reliable, user‑friendly devices. The VBR-20 benefits from rigorous quality control, a calibrated sensor that meets international photometric standards, and a design that resists dust and moisture. Our after‑sales support includes a 12‑month warranty, responsive technical assistance, and firmware updates that keep the device current with the latest app features. Because the meter does not rely on continuous internet connectivity, it remains functional in low‑signal environments, giving you confidence that data collection will not be interrupted. The combination of long‑term data storage, easy export, and a battery life that spans an entire growing season makes the VBR-20 a cost‑effective solution for growers seeking to optimize light management without investing in expensive, complex equipment.
Key Features
- Accurate DLI measurement in mol/m²/d for full sun to deep shade conditions
- Stores up to 180 days of continuous data, eliminating the need for frequent manual logging
- Bluetooth connectivity enables instant data viewing and file export without internet
- Compact, weather‑resistant design suitable for indoor and outdoor horticulture
- Dedicated customer support and a 12‑month warranty ensure reliable long‑term operation
FAQ
How often does the meter need calibration?
The VBR-20 is factory‑calibrated and maintains accuracy for the typical 12‑month warranty period. Re‑calibration is only required if the device is exposed to extreme conditions or after a firmware update that modifies sensor algorithms.
Can the meter be used with any smartphone?
Yes, the Bluetooth app is compatible with both iOS and Android devices running the latest operating system versions. Simply download the “VBR‑20 DLI” app from the App Store or Google Play, enable Bluetooth, and pair with the meter.
What is the battery life and how is it replaced?
The device uses two AAA batteries that provide up to one year of continuous operation under typical usage. When the battery indicator signals low power, replace the batteries by opening the rear compartment—no tools are required.
Is the exported data compatible with other analysis software?
Exported files are in standard CSV format, which can be opened in Excel, Google Sheets, or any data‑analysis platform that supports comma‑separated values.
Does the meter work in low‑light or nighttime conditions?
The sensor is optimized for daylight measurements and does not record meaningful DLI values in darkness. For night‑time monitoring, a separate lux meter is recommended.








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