- 1 x HM Digital COM-80 TDS/EC/Temp Meter
- 3 x 1.5V Button Cell Batteries (LR44)
- Protective Cap
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HM Digital Pen Style COM-80 TDS EC Temp Meter
$49.99 USD
- TDS range of 0 to 5000 ppm
- Up to 1000 hours of battery life with standard LR44 button cell batteries
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- Free Shipping On Most Items*To the lower 48
- Transparent PricingBacked w/ price match guarantee
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VOLUME PRICING
Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
- You are managing nutrient levels in a hydroponic reservoir because inconsistent readings cause your plants to miss critical nutrient balance
- You are testing tap water for your garden because you need to ensure your plants receive exactly what they need to thrive
- The one-touch digital calibration lets you spend less time fiddling with equipment and more time focusing on your harvest
- The large LCD ensures you get correct measurements every time in any environment
- The water-resistant housing and large LCD provide clear visibility in any environment
- Growers who monitor nutrient solutions say they stopped worrying about incorrect measurements when managing water chemistry
- Users tracking reservoir parameters say the simultaneous readings give them a complete picture of water quality in seconds
HM Digital Pen Style COM-80 TDS EC Temp Meter
Maintaining the perfect nutrient balance is critical for any successful grow, yet many hobbyists struggle with inconsistent readings and complex calibration. The HM Digital Pen Style COM-80 TDS EC Temp Meter solves this by providing a professional-grade, highly accurate solution that is both affordable and incredibly easy to use. Whether you are monitoring hydroponic reservoirs or testing tap water, this meter ensures your plants receive exactly what they need to thrive.
This versatile tool allows you to measure Electrical Conductivity (EC), Total Dissolved Solids (TDS), and temperature simultaneously, giving you a complete picture of your water quality in seconds. For growers looking for a complete testing suite, pairing this with the HM Digital PH-80 pH Temp Meter allows for full control over your water chemistry. If you require even higher precision or professional-grade durability for commercial applications, consider upgrading to the HM Digital Pro COM-100 TDS EC Temp Meter.
Designed by HM Digital, the COM-80 features a sleek, water-resistant housing and a large LCD for clear visibility in any environment. With its one-touch digital calibration and automatic temperature compensation, you can spend less time fiddling with equipment and more time focusing on your harvest. It is the ideal entry-point for anyone serious about cannabis nutrients and water management.
What's Included
Features
📊
Simultaneous Readings
Measures EC, TDS, and temperature levels at the same time for fast analysis.
🔘
Digital Calibration
Features one-touch automatic calibration for consistently accurate nutrient readings.
🖥️
Large LCD
The compact frame holds a large display to ensure you get correct measurements every time.
🔋
Battery-Operated
Enjoy up to 1000 hours of battery life with standard LR44 button cell batteries.
Specifications
| Specification | Value |
|---|---|
| EC Range | 0 – 9990 µS; 0 – 9.9 mS |
| TDS Range | 0 – 5000 ppm (0.5 Scale); 0-8560 ppm (0.7 Scale) |
| Temperature Range | 1-80 °C; 33-176 °F |
| Resolution | 1 µS/ppm; 0.1 mS |
| Temp. Resolution | 0.1 °C/F |
| Accuracy | +/- 2% |
| Power source | 3 x 1.5V button cell batteries (LR44 included) |
| Dimensions | 15.3 x 3.2 x 1.8 cm (6.0 x 1.3 x 0.7 inches) |
| Weight | 53.9g (1.9 oz) |
Warranty
HM Digital products are covered by a manufacturer's warranty against defects in materials and workmanship. Please contact support for specific warranty duration and coverage details.
FAQs
How often should I calibrate the COM-80?
For best results, calibrate your meter once a month or if you suspect inaccurate readings. Frequent use in highly concentrated solutions may require more frequent calibration.
Is the HM Digital COM-80 waterproof?
The COM-80 is water-resistant, meaning it can handle splashes and brief contact with water, but it should not be fully submerged for extended periods.
Can this meter measure pH levels?
No, the COM-80 is designed specifically for TDS (Total Dissolved Solids), EC (Electrical Conductivity), and temperature. To measure pH, we recommend the HM Digital PH-80.
What type of batteries does it use?
It uses three 1.5V button cell batteries (LR44 or equivalent), which are included with your purchase and provide roughly 1000 hours of usage.
What is the difference between the 0.5 and 0.7 TDS scales?
Different regions and nutrient brands use different conversion factors. The COM-80 allows you to read in both scales to ensure compatibility with your specific nutrient chart.
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Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
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