# Extech MO55 Combination Pin/Pinless Moisture Meter vs Delmhorst BD-2100 Digital Pin Moisture Meter: specs and price compared

A sourced, side-by-side comparison of the Extech MO55 Combination Pin/Pinless Moisture Meter (Extech) and Delmhorst BD-2100 Digital Pin Moisture Meter (Delmhorst) among moisture meters. Extech MO55 Combination Pin/Pinless Moisture Meter is the cheaper of the two at $104.78.

## Side by side

| Spec | Extech MO55 Combination Pin/Pinless Moisture Meter | Delmhorst BD-2100 Digital Pin Moisture Meter |
| --- | --- | --- |
| US price | $104.78 | $490 |
| Brand | Extech | Delmhorst |
| Measurement range pct | Pin: 5-50% wood, 1.5-33% other materials; Pinless: 0-99% | 6-40% wood; 0.2-50% gypsum/sheetrock; 0-100 reference scale |
| Pin vs pinless | Pin and Pinless (combination) | Pin |
| Material calibration groups | Wood (low/medium/high), other building materials (low/medium/high) | Wood scale, gypsum/sheetrock scale, 0-100 reference scale for other materials |
| Sensing depth (in) | 1 | 0.3125 |
| Accuracy | ±(3% of reading + 5 digits) | — |
| Hold peak function | Yes | Yes |
| Audible alarm | Yes | Yes |
| Display type | LCD with low/medium/high icons | Digital display |

## Key differences

- Measurement range pct: Extech MO55 Combination Pin/Pinless Moisture Meter Pin: 5-50% wood, 1.5-33% other materials; Pinless: 0-99% vs Delmhorst BD-2100 Digital Pin Moisture Meter 6-40% wood; 0.2-50% gypsum/sheetrock; 0-100 reference scale
- Pin vs pinless: Extech MO55 Combination Pin/Pinless Moisture Meter Pin and Pinless (combination) vs Delmhorst BD-2100 Digital Pin Moisture Meter Pin
- Material calibration groups: Extech MO55 Combination Pin/Pinless Moisture Meter Wood (low/medium/high), other building materials (low/medium/high) vs Delmhorst BD-2100 Digital Pin Moisture Meter Wood scale, gypsum/sheetrock scale, 0-100 reference scale for other materials
- Sensing depth (in): Extech MO55 Combination Pin/Pinless Moisture Meter 1 vs Delmhorst BD-2100 Digital Pin Moisture Meter 0.3125
- Display type: Extech MO55 Combination Pin/Pinless Moisture Meter LCD with low/medium/high icons vs Delmhorst BD-2100 Digital Pin Moisture Meter Digital display

## Sources

- Extech MO55 Combination Pin/Pinless Moisture Meter: https://www.extech.com/products/mo55/ (extech.com, verified 2026-08-05)
- Delmhorst BD-2100 Digital Pin Moisture Meter: https://www.forestry-suppliers.com/p/79326/27761/delmhorst-bd-2100-moisture-meter (forestry-suppliers.com, verified 2026-08-05)

Canonical: https://frontdeskreview.com/gear/moisture-meters/extech-mo55-vs-delmhorst-bd-2100/
Cite: Per The Front Desk Review, Extech MO55 Combination Pin/Pinless Moisture Meter ($104.78) vs Delmhorst BD-2100 Digital Pin Moisture Meter ($490) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/moisture-meters/extech-mo55-vs-delmhorst-bd-2100/
License: CC BY 4.0.