Concrete, Wood and Wall Material Checks
The MS300C concrete moisture meter is a handheld reader for comparison checks on concrete, wood, wall materials, and other materials covered by its selectable modes. It uses a high-frequency principle with automatic temperature compensation for quick material checks.
Choose the Material Code Before Testing
Confirm the material-code guidance for the intended material before ordering. When testing, use the documented code for that material. The ten modes are not interchangeable, so keep the same code and similar test conditions when comparing one area with another.
- Check several clean, representative areas instead of relying on one reading.
- Keep the meter position and selected material code consistent between readings.
- Compare readings taken on the same material; values from different modes should not be treated as directly equivalent.
- Surface condition, nearby metal, coatings, and changing test conditions can affect comparative readings.
For help choosing a meter and interpreting results, browse the moisture meter collection and review the guide to common moisture meter false-positive causes.
Ten Material Code Modes
- 0-70% measuring range with 0.1% resolution.
- Supports 10 material codes for compatible surfaces.
- Backlit 4-digit LCD keeps readings easy to view.
- Data hold, low-battery alert, manual power-off, and auto power-off are included.
- Compact 120 g body is practical for site checks.
MS300C Specs
| Model | MS300C |
| Materials | concrete, wood, wall materials, and other materials supported by the documented material-code guidance |
| Measuring range | 0-70% |
| Resolution | 0.1% |
| Accuracy | +/-0.5% in the main moisture range |
| Method | high-frequency principle with automatic temperature compensation |
| Operating temperature | 0-60 C |
| Power | 4 x 1.5 V AAA batteries |
| Size | 140 x 60 x 22 mm |
| Weight | 120 g, excluding batteries |
Free Shipping
Free shipping is available on all orders. Shipping methods and carriers may vary depending on the destination, order details, and available logistics options. Full Shipping Policy
Returns Policy
For returns and refunds, please review our full Refund Policy before placing an order. If you need help with an order, contact us before your order has shipped whenever possible. Full Returns Policy
When Will My Order Ship?
For Standard Shipping, we aim to pack and ship out your order within 4 business days. During special periods, such as heavy order processing or local inventory shortages that require deployment, please expect it to take an additional day or two for processing. We ship five days a week, Monday through Friday.
You will receive a shipment confirmation with tracking information via email when your order has shipped. Once you receive this email, we cannot change or cancel your order.
Can I Change The Shipping Address On My Order?
Please contact us immediately via email if you realize that you gave us the wrong shipping address — if it hasn't shipped yet, we might be able to correct it before it goes out the door.If your order ships to the address provided and is returned to us as undeliverable, then you are responsible for paying the cost of shipping again to resend it to you. If you decide you do not want your order reshipped, we'll refund you for the products less the original shipping charges, once your order returns to our warehouse. We'll reach out to you to coordinate your options before re-shipping.
If your order ships to an incorrect address provided at the time the order is placed and is not retrievable, we are not responsible and cannot offer reimbursement.
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Let customers speak for us
My first impression after opening and installing batteries was that this meter is very well built considering the price and manufacturer. I had read some reviews stating that it's amp measurements were not accurate below 5 amps, I haven't seen any issues in any measurements I've taken, even side by side with my fluke meters. I've successfully taken accurate amp, voltage and continuity measurements with this ETCR6920B, the display is nice and legible. I haven't tried storing data and making transfers to a PC yet, the soft case is good enough for storage on a shelf and the test leads are of good quality and rated for 1000v. There's nothing bad to say about this meter especially when you consider the price, it's a really great meter.
Works as described.
