---
product_id: 85774081
title: "Solar Power Meter, Handheld Solar Irradiance Meter Solar Energy Meter, Digital Solar Power Meter with 2000 W/m2, 634 BTU / (ft2 · h) Measuring Range and MAX/MIN/Data Hold Function"
brand: "tenmars"
price: "690.48 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Tenmars"
url: https://www.desertcart.tn/products/85774081-solar-power-meter-handheld-solar-irradiance-meter-solar-energy-meter
store_origin: TN
region: Tunisia
---

# MAX/MIN & Data Hold functions Low battery indicator alert 2000 W/m² max irradiance range Solar Power Meter, Handheld Solar Irradiance Meter Solar Energy Meter, Digital Solar Power Meter with 2000 W/m2, 634 BTU / (ft2 · h) Measuring Range and MAX/MIN/Data Hold Function

**Brand:** tenmars
**Price:** 690.48 DT
**Availability:** ✅ In Stock

## Summary

> ☀️ Harness the power of precision — measure solar energy like a pro!

## Quick Answers

- **What is this?** Solar Power Meter, Handheld Solar Irradiance Meter Solar Energy Meter, Digital Solar Power Meter with 2000 W/m2, 634 BTU / (ft2 · h) Measuring Range and MAX/MIN/Data Hold Function by tenmars
- **How much does it cost?** 690.48 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/85774081-solar-power-meter-handheld-solar-irradiance-meter-solar-energy-meter)

## Best For

- tenmars enthusiasts

## Why This Product

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

## Key Features

- • **Dynamic Data Control:** MAX/MIN recording and Data Hold features let you capture critical solar data effortlessly during fieldwork.
- • **User-Friendly Alerts:** Low battery indicator ensures uninterrupted operation, so you never miss a vital measurement.
- • **Precision Solar Insights:** Accurately measures solar irradiance up to 2000 W/m² with ±10 W/m² precision for confident energy assessments.
- • **Versatile Unit Switching:** Seamlessly toggle between W/m² and BTU/(ft²·h) units to match your project’s technical requirements.
- • **Broad Professional Applications:** Ideal for solar panel testing, climatology research, building physics, and environmental monitoring—stay ahead in your field.

## Overview

The Tenmars TM206 Solar Power Meter is a handheld digital device designed for precise solar irradiance measurement up to 2000 W/m² (634 BTU/(ft²·h)) with ±10 W/m² accuracy. Featuring MAX/MIN data logging, Data Hold, unit switching, and a low battery indicator, it supports diverse professional applications including solar panel testing, climatology, and environmental monitoring. Compact and reliable, it empowers professionals to capture critical solar data with ease and confidence.

## Description

Solar Power Meter, Handheld Solar Irradiance Meter Solar Energy Meter, Digital Solar Power Meter with 2000 W/m2, 634 BTU / (ft2 · h) Measuring Range and MAX/MIN/Data Hold Function: desertcart.com: Industrial & Scientific

Review: Great device - lots of bang for your buck, and great support! - I purchased this on the advice of a "biohacker blogger" to test the irradiance of photobiomodulation units. While they aren't meant to be completely accurate, because of the various factors involved in testing, for the price you pay, and the conditions, they do give you a very usable result. They're definitely recommended for the purpose described. Also - when I was having problems with the device, I received a very fast reply from customer services - and several follow ups to make sure that the problem had been solved. I recommend both the product and the company.
Review: Excellent Product. Could be Phenomenal with a Few Fixes by the Company. - Writing this as a physician with over 600 articles on photobiomodulation (PBM) read and over 1500 citations retrieved. This is so far the best meter for measuring irradiance of a device that I have found. There are some limitations or faults in this product to my standards. First, the sensor should have a cap over it to protect it from dust or damage. Like protecting an electric shaver usually comes with a cap. Second, how stupid not to have the irradiance setting remain set (unless changed). I use mW/cm² so I have to select on the TM-206A the W/m². Once I turn off the Tenmars, and then turn it back on, it reverts to BTU. That's not what I would expect. Those are the onlu limitations. Anyone can convert W/m² to mW/cm² by dividing by 10. What would be great is if Tenmars showed the reading of its unit versus the more scientific units sold by Thor Labs ($1492) or Gigahertz-Optik ($3,500). Is there a need for a conversion factor (fudge factor) which often is about 0.5 (0.488 to be exact). Is that needed to be multiplied to the mW/cm² or not? That's the question. One other issue for clarity. The Tenmars has an "R" button that moves the decimal point. If this is set wrong, then the high powered units that read over 200 mW/cm² will show on the monitor, the "OL" or over limit reading. If you have, for example, a reading of 38 W/cm² that should be shown as 038. If you press again, you reduce the upper limit from 1999 to 199 W/cm² This is pertinent only for high power density device testing or testing a solar panel.

## Features

- 【Measuring Range】The measurement range of TENMARS digital solar power meter is 2000 W/m² and 634 BTU/(ft²·h), with an accuracy of 10 W/m2, 3 BTU / (ft2 · h)
- 【Unit Switching】Equipped with unit switching and MAX/MIN functions, the BTU meter can switch measurement units according to requirements, helping you test more effectively
- 【Low Battery Indicator】This solar transmission and power meter features low battery indicator, reminding you to replace the battery promptly to ensure the proper operation of the device
- 【Multi-function】The functions of the solar irradiance meter include: Data hold, MAX/MIN recording, LCD display, unit switching, and a low battery indicator
- 【Wide Application】The solar power meter is ideal for use in meteorology, climatology, climate change research, building engineering physics, solar panel testing, and various home, agricultural, and environmental monitoring applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07HY8YVKQ |
| Batteries | 1 9V batteries required. |
| Best Sellers Rank | #177,835 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #62 in Industrial Power Meters |
| Date First Available | June 23, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 6.1 ounces |
| Item model number | TM206 |
| Manufacturer | Tenmars |
| Package Dimensions | 6.69 x 4.53 x 1.89 inches |

## Images

![Solar Power Meter, Handheld Solar Irradiance Meter Solar Energy Meter, Digital Solar Power Meter with 2000 W/m2, 634 BTU / (ft2 · h) Measuring Range and MAX/MIN/Data Hold Function - Image 1](https://m.media-amazon.com/images/I/71SSyK2oiYL.jpg)

## Questions & Answers

**Q: What spectrum of wavelengths does the photodiode/sensor in your pyranometer measure?**
A: Peak sensitivity wavelength: 400 - 1100 nm.

**Q: Can this take measurements over a set timeframe? Or only a one time sample?**
A: It really is a one time reading. Point in direction you want and read. It does have a Min an Max function so I guess you can leave it on (battery dependent) and look at it later.

**Q: is this meter has a calibration  certificate?**
A: Yes, it comes with a calibration certificate, pre-calibrated before factory.

**Q: Is this tenmars tm206 brand authentic? i dont see the logo in your pictures, please confirm**
A: Yes, we are the Brand owner of TENMARS, the LOGO of TENMARS is in the main unit and also in the packaging.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great device - lots of bang for your buck, and great support!
*by A***R on April 28, 2021*

I purchased this on the advice of a "biohacker blogger" to test the irradiance of photobiomodulation units. While they aren't meant to be completely accurate, because of the various factors involved in testing, for the price you pay, and the conditions, they do give you a very usable result. They're definitely recommended for the purpose described. Also - when I was having problems with the device, I received a very fast reply from customer services - and several follow ups to make sure that the problem had been solved. I recommend both the product and the company.

### ⭐⭐⭐⭐ Excellent Product. Could be Phenomenal with a Few Fixes by the Company.
*by S***M on January 18, 2026*

Writing this as a physician with over 600 articles on photobiomodulation (PBM) read and over 1500 citations retrieved. This is so far the best meter for measuring irradiance of a device that I have found. There are some limitations or faults in this product to my standards. First, the sensor should have a cap over it to protect it from dust or damage. Like protecting an electric shaver usually comes with a cap. Second, how stupid not to have the irradiance setting remain set (unless changed). I use mW/cm² so I have to select on the TM-206A the W/m². Once I turn off the Tenmars, and then turn it back on, it reverts to BTU. That's not what I would expect. Those are the onlu limitations. Anyone can convert W/m² to mW/cm² by dividing by 10. What would be great is if Tenmars showed the reading of its unit versus the more scientific units sold by Thor Labs ($1492) or Gigahertz-Optik ($3,500). Is there a need for a conversion factor (fudge factor) which often is about 0.5 (0.488 to be exact). Is that needed to be multiplied to the mW/cm² or not? That's the question. One other issue for clarity. The Tenmars has an "R" button that moves the decimal point. If this is set wrong, then the high powered units that read over 200 mW/cm² will show on the monitor, the "OL" or over limit reading. If you have, for example, a reading of 38 W/cm² that should be shown as 038. If you press again, you reduce the upper limit from 1999 to 199 W/cm² This is pertinent only for high power density device testing or testing a solar panel.

### ⭐⭐⭐⭐⭐ Helpful to find out issues with solar panel
*by O***I on July 2, 2024*

Helped me to figure out the issues with solar panel. I used it to monitor solar activity and solar panel performance. One day I found reduced performance of solar panel at the same solar activity.

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-02-04*