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Moisture Control
Humidity Monitor Card
A peel-and-stick card that reads relative humidity at a glance. Put it next to a Drybox and you will know when to refill without guesswork.
- Range: 20% to 80% RH
- No batteries needed
| Size | 3 in × 3 in card |
|---|---|
| Reading | Color-shift indicator, 30–80% RH range |
| Accuracy | ±3% RH at 68–77°F |
| Life | Reusable indefinitely — recharge with 24 h in warm dry room |
| Power | No batteries, no calibration |
| Made in | United States |
