# General Tools MMD4E Pin-Type LCD Moisture Meter vs Klein Tools ET140 Pinless Moisture Meter: specs and price compared

A sourced, side-by-side comparison of the General Tools MMD4E Pin-Type LCD Moisture Meter (General Tools) and Klein Tools ET140 Pinless Moisture Meter (Klein Tools) among moisture meters. General Tools MMD4E Pin-Type LCD Moisture Meter is the cheaper of the two at $43.8.

## Side by side

| Spec | General Tools MMD4E Pin-Type LCD Moisture Meter | Klein Tools ET140 Pinless Moisture Meter |
| --- | --- | --- |
| US price | $43.8 | $49.97 |
| Brand | General Tools | Klein Tools |
| Measurement range pct | 5-50% wood; 1.5-33% building materials | 0-100% (relative) |
| Pin vs pinless | Pin | Pinless |
| Material calibration groups | Wood (low/medium/high), building materials (low/medium/high) | Drywall, masonry, hardwood, softwood |
| Sensing depth (in) | 0.3 | 0.75 |
| Accuracy | ±2%, 0.1% resolution | ±4% |
| Hold peak function | Yes | Yes |
| Audible alarm | Yes | Yes |
| Display type | Backlit LCD, 99.9-count, 0.3 in. digits | Reverse-contrast LCD + 9-segment LED bar graph, 0.1% resolution |

## Key differences

- Measurement range pct: General Tools MMD4E Pin-Type LCD Moisture Meter 5-50% wood; 1.5-33% building materials vs Klein Tools ET140 Pinless Moisture Meter 0-100% (relative)
- Pin vs pinless: General Tools MMD4E Pin-Type LCD Moisture Meter Pin vs Klein Tools ET140 Pinless Moisture Meter Pinless
- Material calibration groups: General Tools MMD4E Pin-Type LCD Moisture Meter Wood (low/medium/high), building materials (low/medium/high) vs Klein Tools ET140 Pinless Moisture Meter Drywall, masonry, hardwood, softwood
- Sensing depth (in): General Tools MMD4E Pin-Type LCD Moisture Meter 0.3 vs Klein Tools ET140 Pinless Moisture Meter 0.75
- Accuracy: General Tools MMD4E Pin-Type LCD Moisture Meter ±2%, 0.1% resolution vs Klein Tools ET140 Pinless Moisture Meter ±4%
- Display type: General Tools MMD4E Pin-Type LCD Moisture Meter Backlit LCD, 99.9-count, 0.3 in. digits vs Klein Tools ET140 Pinless Moisture Meter Reverse-contrast LCD + 9-segment LED bar graph, 0.1% resolution

## Sources

- General Tools MMD4E Pin-Type LCD Moisture Meter: https://generaltools.com/pin-type-lcd-moisture-meter (generaltools.com, verified 2026-08-05)
- Klein Tools ET140 Pinless Moisture Meter: https://www.kleintools.com/catalog/environmental-testers/pinless-moisture-meter (kleintools.com, verified 2026-08-05)

Canonical: https://frontdeskreview.com/gear/moisture-meters/general-tools-mmd4e-vs-klein-tools-et140/
Cite: Per The Front Desk Review, General Tools MMD4E Pin-Type LCD Moisture Meter ($43.8) vs Klein Tools ET140 Pinless Moisture Meter ($49.97) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/moisture-meters/general-tools-mmd4e-vs-klein-tools-et140/
License: CC BY 4.0.