
HM Digital Pen Style COM-80 TDS EC Temp Meter

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Is the HM Digital Pen Style COM-80 TDS EC Temp Meter Right for You?
If you're looking for a compact and highly accurate water quality testing device, the HM Digital Pen Style COM-80 TDS EC Temp Meter is a great option. Ideal for hydroponics, aquaculture, and water purification, this pen-style meter provides precise readings for Electrical Conductivity (EC), Total Dissolved Solids (TDS), and temperature.
- Features & Benefits
- Product Specifications
- What is included?
- Warranty Policy
HM Digital Pen Style COM-80 TDS EC Temp Meter
The HM Digital Pen Style COM-80 is a compact and highly accurate water quality testing device, ideal for hydroponics, aquaculture, and water purification. Designed for portability and ease of use, this pen-style meter provides fast and reliable measurements of Electrical Conductivity (EC), Total Dissolved Solids (TDS), and temperature.

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Simultaneously measures EC, TDS & temperature.
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One-touch digital calibration for accuracy.
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Bright LCD for clear readings anywhere.
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Compact, water-resistant & portable design.
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Battery-powered (LR44) lasts up to 1000 hours.
Why Choose the HM Digital Pen Style COM-80 TDS EC Temp Meter?
The HM Digital Pen Style COM-80 TDS EC Temp Meter is a compact and user-friendly water testing tool designed for accuracy and convenience. Ideal for hydroponics, aquaculture, and water purification, this meter provides precise measurements of EC, TDS, and temperature in a portable design. Featuring one-touch digital calibration and automatic temperature compensation, it ensures quick and consistent readings in various water conditions.
Why HM Digital?
HM Digital is a trusted name in water quality testing, offering innovative and reliable solutions for growers, aquarium enthusiasts, and professionals. Designed for precision, its advanced meters provide accurate TDS and temperature readings, ensuring optimal water conditions. With user-friendly features like digital calibration and a durable, water-resistant design, HM Digital products help you maintain consistency and efficiency in your water monitoring routine.

Why Buy From Us?
At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.
FAQ Section








Specifications
HM Digital Pen Style COM-80 TDS EC Temp Meter Specifications | |
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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 |
Temperature Resolution | 0.1 °C/F |
Accuracy | ±2% |
Power Source | 3 x 1.5V button cell batteries (LR44 or equivalent, included) |
Auto-Off Feature | Automatic power-off to extend battery life |
Housing | Water-resistant design for durability |
Display | Large LCD screen for easy readability |
Dimensions | 15.3 x 3.2 x 1.8 cm (6.0 x 1.3 x 0.7 inches) |
Weight | 53.9 g (1.9 oz) |
What’s Included?
The HM Digital Pen Style COM-80 TDS EC Temp Meter package contains:
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HM Digital Pen Style COM-80 TDS EC Temp Meter
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Water-resistant housing for durability in various testing environments
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Pre-installed 3 x LR44 button cell batteries
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Instruction manual with calibration and usage guide

Warranty Policy
Please check out the manufacturers website for Warranty related issues.