Description
Product Overview
The PHOTOBIO LGBQM2 Advanced Quantum PAR Meter is engineered to provide horticultural professionals and serious indoor growers with accurate, reliable measurements of photosynthetically active radiation (PAR) across the critical 400‑700 nm wavelength range. Housed in a compact, ergonomically designed main unit, the meter includes a detachable remote sensor, two connection cables (a short‑coiled cable and a 12‑foot straight cable), a protective carrying case, and requires a single AAA battery for operation. Its dimensions of 5.59 × 6.22 × 3.15 inches and weight of just 1.12 lb make it easy to transport between grow rooms, greenhouses, or field sites. The device can record up to 99 individual readings, allowing users to track light intensity changes over time, compare different lighting setups, and fine‑tune fixture placement for maximum photosynthetic efficiency. Built with a robust sensor calibrated to industry standards, the LGBQM2 delivers repeatable, high‑resolution data that can be directly applied to crop management decisions.
![[Product front view showing all components]](https://www.tixor.store/wp-content/uploads/2026/07/6272efd5f3694cc4b0babbea218aa5a3.jpg)
Usage
Whether you are managing a commercial vertical farm, a boutique cannabis operation, or a hobbyist’s indoor garden, the LGBQM2 fits seamlessly into daily workflow. The handheld design allows you to walk the aisles of your grow space, positioning the remote sensor at canopy level to capture the exact light intensity that plants receive. Because the meter is battery powered, there is no need for external power sources, making it ideal for use in tight spaces or during power‑out events. Users typically employ the device during the initial lighting design phase to verify that LED, high‑pressure sodium (HPS), or supplemental fixtures are delivering the intended PAR levels. Subsequent measurements are taken after adjusting fixture height, dimmer settings, or adding reflective materials, with each reading stored for later analysis. The meter’s intuitive interface requires only a few button presses to record data, and the built‑in memory ensures that you can review past measurements without needing to connect to a computer.
Why Choose Us
PHOTOBIO has a long‑standing reputation for delivering reliable horticultural equipment, and the LGBQM2 continues that tradition with a focus on accuracy, durability, and user‑friendly design. The sensor’s calibration is traceable to recognized standards, guaranteeing that the PAR values you see are trustworthy and comparable across different measurement sessions. The rugged construction of the main unit and remote sensor protects against accidental drops, moisture, and the occasional exposure to plant nutrients, ensuring a long service life even in demanding grow environments. Additionally, PHOTOBIO provides responsive customer support, offering firmware updates, calibration services, and technical assistance to help you get the most out of your investment. With a 4.6‑star rating from over 300 verified users, the LGBQM2 has proven its value in real‑world applications, consistently delivering the data growers need to optimize yields and reduce energy waste.
Key Features
- Accurate 400‑700 nm PAR measurement ensures plants receive the right light intensity for optimal growth.
- Compact handheld design with detachable sensor makes on‑site measurements quick and effortless.
- Battery powered operation eliminates the need for cords, allowing use in any location.
- Memory capacity for up to 99 readings lets you track changes over time without external devices.
- PHOTOBIO’s dedicated support team provides calibration assistance and responsive after‑sales service.
FAQ
What types of grow lights are compatible with the LGBQM2?
The meter is designed to work with all common indoor lighting technologies, including LED fixtures, high‑pressure sodium (HPS) lamps, metal‑halide, and traditional fluorescent or incandescent grow lights. It measures the total PAR output regardless of the light source.
How often should I calibrate the sensor?
For most indoor applications, calibrating once a year is sufficient. However, if you frequently change lighting setups or operate in environments with extreme temperature fluctuations, a semi‑annual calibration can help maintain peak accuracy.
Can the stored readings be exported for analysis?
Yes. By connecting the meter to a computer via the supplied USB cable, you can download the stored data in CSV format, making it easy to import into spreadsheet software or specialized lighting analysis tools.
What is the battery life like?
Using a single AAA battery, the LGBQM2 typically provides up to 200 hours of continuous operation, depending on usage patterns. The device includes a low‑battery indicator to alert you when a replacement is needed.
Is the meter waterproof?
The main unit is splash‑resistant (IPX4 rating), protecting it from accidental splashes or humidity in greenhouse environments. The remote sensor is not fully waterproof, so it should be kept dry and stored in the protective case when not in use.
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