Three-in-one precision
Measure TDS, EC, and temperature with a single compact pen, so you can monitor water quality without juggling multiple tools.
- Free shipping
- 14-day easy returns
- Secure checkout
- Quality guaranteed
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Why customers love it
Know your water quality in seconds
This compact 3-in-1 pen measures TDS, EC, and temperature, giving you a quick and reliable read on water purity for aquariums, hydroponics, pools, and drinking water.
- Combines TDS, EC, and temperature measurement in one pen-style device
- Four display modes (TDS/EC in °C or °F) with high accuracy
- Automatic temperature compensation for reliable readings
- Backlit LCD screen for easy viewing in low light
- Holds function locks the reading on screen for convenient review
- Auto shut-off after 5 minutes conserves battery life
Why you'll love it
Accurate in any conditions
Automatic temperature compensation keeps readings reliable even when water temperature varies, while four display modes let you view TDS or EC in °C or °F.
Easy to read, anywhere
The backlit LCD screen makes results visible even in low-light settings, and the holds function locks the reading on screen for convenient review.
Battery-friendly design
Auto shut-off after 5 minutes conserves battery life, so the pen is ready when you need it.
Specs
The details that matter
Built to last outdoors, season after season.
- Product Type
- Digital PH/TDS/EC Meter Tester Thermometer Pen
- Measurement Range
- PPM Range 0-9999
- Test Type
- TDS Value, PH Value, Combined Test
- Display
- Backlit LCD
- Power
- Auto shut-off after 5 minutes
Our worry-free shopping promise
If your order arrives damaged, defective, or not as described, contact us within 14 days and we will make it right with a replacement or refund.
Frequently asked questions
Everything you might want to know before you order.
What does this 3-in-1 meter measure?
This pen measures Total Dissolved Solids (TDS), Electrical Conductivity (EC), and water temperature in one compact, pen-style device.
How do I switch between display modes?
The meter offers four display modes, letting you view TDS or EC readings in either °C or °F for flexible monitoring.
Will temperature changes affect my readings?
No—automatic temperature compensation ensures reliable readings across varying water conditions.
Can I use it in low-light conditions?
Yes, the backlit LCD screen makes it easy to view readings even in low-light situations.
How do I keep a reading for later review?
Use the holds function to lock the current reading on the screen, so you can review it at your convenience.
Does the meter turn off automatically?
Yes, it features auto shut-off after 5 minutes to conserve battery life.
Shipping & returns
Shipping
- Delivers to United States (based on your selected country/region).
- Estimated delivery: 3–15 business days after dispatch.
- Shipping cost: Free.
Returns
You can request a return within 14 days after delivery. Standard returns have a €4.00 EUR (approximately $4.66 USD) flat-rate return shipping fee, deducted from your refund. Return shipping is free for items that arrived damaged, defective, or incorrect. Items should be unused and in original packaging where possible. Contact us before sending anything back.