---
product_id: 178093447
title: "Apogee Instruments MQ-501 Handheld Full Spectrum Quantum Meter, 400 to 700 nm, 0.17 m Lead w/Bracket"
brand: "fgi"
price: "€ 1145.81"
currency: EUR
in_stock: false
url: https://www.desertcart.es/products/178093447-apogee-instruments-mq-501-handheld-full-spectrum-quantum-meter-400
store_origin: ES
region: Spain
---

# Apogee Instruments MQ-501 Handheld Full Spectrum Quantum Meter, 400 to 700 nm, 0.17 m Lead w/Bracket

**Brand:** fgi
**Price:** € 1145.81
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Apogee Instruments MQ-501 Handheld Full Spectrum Quantum Meter, 400 to 700 nm, 0.17 m Lead w/Bracket by fgi
- **How much does it cost?** € 1145.81 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/178093447-apogee-instruments-mq-501-handheld-full-spectrum-quantum-meter-400)

## Best For

- fgi enthusiasts

## Why This Product

- Trusted fgi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

The MQ-501 is designed to be an easy-to-use handheld meter for spot-check measurements. The meter includes the AM-001 meter mounting bracket to mount the sensor on a horizontal plane to the meter and approximately 0.17 m of cable to accommodate the bracket length. The full-spectrum sensor incorporates a blue-enhanced silicon photodiode and custom optical filters with a rugged, self-cleaning sensor housing design, anodized aluminum body with acrylic diffuser. Typical applications include PPFD measurement over plant canopies in outdoor environments, greenhouses, and growth chambers, and reflected or under-canopy (transmitted) PPFD measurements in the same environments. The meter has a sample and log mode, and will record an integrated daily total in mol m-2 d-1. Sample mode will record up to 99 manual measurements. Log mode will power the meter on/off to make a measurement every 30 seconds. Every 30 minutes the meter will average the sixty 30 second measurements and record the averaged value to memory. The meter can store up to 99 averages, once full it will start to overwrite the oldest measurement with new ones. An integrated daily total will be recorded from the 48 averaged measurements (making a 24 hr period). Sample and log measurements can be reviewed on the LCD display or by downloading the data to a computer, however, the integrated daily total can only be viewed by downloading the data to a computer. Downloading data to a computer requires the AC-100 communication cable (a standard USB cable will not work) and ApogeeAMS software. Comes with a free protective carrying case.

## Features

- Ideal for measurements of LED, incandescent or natural lighting
- Compact and handheld, no cord to manage
- Apogees most accurate and sensitive quantum flux sensor used also on the top selling MQ-500 PAR meter

## Images

![Apogee Instruments MQ-501 Handheld Full Spectrum Quantum Meter, 400 to 700 nm, 0.17 m Lead w/Bracket - Image 1](https://m.media-amazon.com/images/I/51vId+yQl7L.jpg)
![Apogee Instruments MQ-501 Handheld Full Spectrum Quantum Meter, 400 to 700 nm, 0.17 m Lead w/Bracket - Image 2](https://m.media-amazon.com/images/I/41mM+EztuaL.jpg)
![Apogee Instruments MQ-501 Handheld Full Spectrum Quantum Meter, 400 to 700 nm, 0.17 m Lead w/Bracket - Image 3](https://m.media-amazon.com/images/I/416e1D8CXpL.jpg)
![Apogee Instruments MQ-501 Handheld Full Spectrum Quantum Meter, 400 to 700 nm, 0.17 m Lead w/Bracket - Image 4](https://m.media-amazon.com/images/I/41HorqVJtZL.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.es/products/178093447-apogee-instruments-mq-501-handheld-full-spectrum-quantum-meter-400](https://www.desertcart.es/products/178093447-apogee-instruments-mq-501-handheld-full-spectrum-quantum-meter-400)

---

*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-04*