AH-20Plus DLI Meter.Full Sun,Partial Sun,Partial Shade,Shade.Sun Hours.Sunlight Meter for Gardening,Long Lifetime

Description

Product Overview

The AH20Plus DLI Meter is a compact, high‑precision instrument designed to quantify the total amount of photosynthetically active radiation (PAR) that plants receive over a 24‑hour period. Housed in a rugged ABS enclosure measuring 7.28 x 3.19 x 1.73 inches and weighing just 4.66 ounces, the device is lightweight enough to be carried into any greenhouse, field, or rooftop garden. It operates on a single AAA battery—provided in the package—and is calibrated at the factory to meet strict laboratory standards, ensuring that each reading is accurate to within ±5% of the true value. The meter automatically records the Daily Light Integral (DLI) in moles per square meter, allowing users to classify exposure as full sun (>20 mol m⁻² day⁻¹), partial sun (15‑20 mol m⁻² day⁻¹), or partial shade (10‑15 mol m⁻² day⁻¹). The device is pre‑set to UTC+8/UTC+7 time zones, eliminating the need for manual clock adjustments. Its waterproof rating permits use in rain or during misting, and the sensor is tolerant of both indoor LED lighting and outdoor natural sunlight. With a best‑seller rank of #23 in Lab Photometers & Light Meters, the AH20Plus has earned a solid reputation among hobbyists and professionals alike.

Usage

Whether you are cultivating tomatoes in a backyard garden, managing a hydroponic lettuce system inside a commercial grow‑room, or monitoring the light exposure of ornamental orchids on a balcony, the AH20Plus DLI Meter fits seamlessly into your workflow. Simply place the sensor at canopy level, press the single button, and let the device log light intensity throughout the day. After ten consecutive days, the meter provides a clear trend line that helps you decide if supplemental lighting is required or if shading material should be added to prevent photoinhibition. The waterproof design means you can leave the meter outdoors during a light rain without worrying about damage, and the battery life extends for several months of intermittent use. Because the meter records data automatically, you can retrieve the information later by connecting the device to a computer via the optional USB cable (sold separately) or by manually transcribing the displayed values. This flexibility makes the AH20Plus ideal for small‑scale growers, research labs, educational institutions, and anyone who needs reliable, repeatable light measurements without the complexity of a full‑scale spectroradiometer.

Why Choose Us

DePower stands behind every AH20Plus DLI Meter with a rigorous quality‑control process that begins at the component sourcing stage and continues through final factory calibration. Each unit undergoes a multi‑point verification against a reference light source to guarantee that the DLI readings are consistent across the entire production batch. In addition, we provide a 12‑month warranty that covers any manufacturing defects, and our dedicated support team is available to assist with battery replacement, firmware updates, or troubleshooting questions. Our commitment to sustainability is reflected in the use of recyclable materials for the housing and the inclusion of a low‑power sensor that minimizes energy consumption. By choosing the AH20Plus, you benefit from a product that combines scientific accuracy with user‑friendly design, backed by a brand that values transparency, durability, and customer satisfaction.

Key Features

• Accurate DLI measurement helps you optimize plant growth and reduce energy waste.
• One‑button operation eliminates the need for complex setup or calibration by the user.
• Waterproof ABS housing allows reliable use in rain, mist, or humid greenhouse environments.
• Pre‑set UTC time zone means the meter is ready to use straight out of the box.
• 12‑month warranty and responsive customer support ensure peace of mind after purchase.

FAQ

How does the AH20Plus calculate Daily Light Integral?

The meter integrates photosynthetically active radiation (400‑700 nm) over a 24‑hour period, converting the total photon flux into moles per square meter. The internal algorithm applies factory‑calibrated conversion factors to deliver a DLI value that matches laboratory‑grade spectroradiometers.

Can I use the meter indoors under LED grow lights?

Yes. The sensor is sensitive to the full PAR spectrum, including the narrow bands emitted by modern LED grow lights. It accurately records the light contribution from artificial sources, allowing you to compare indoor and outdoor lighting conditions.

What should I do if the meter does not turn on?

Each unit ships with a fresh AAA battery, but storage conditions can sometimes cause a slight loss of charge. If the device does not power up, replace the battery with a new AAA cell. The meter will start measuring immediately; no additional reset is required.

How many days of data can the meter store?

The AH20Plus can store DLI readings for up to ten consecutive days. After the storage limit is reached, the oldest data is overwritten as new measurements are recorded, ensuring you always have the most recent trend information.

Is the meter compatible with data export software?

While the meter itself does not include built‑in wireless connectivity, you can export the logged data using an optional USB interface. DePower provides a simple Windows utility that reads the stored values and saves them as CSV files for further analysis in spreadsheet programs or specialized horticultural software.