Safe Accessories & Ammo Storage · TempPro
TempPro TP49 Digital Hygrometer
3.6/5 Best Safe Score (how we score)
A palm-size digital hygrometer, formerly sold as ThermoPro, with a stated tolerance of ±2% RH from 30 to 80%, a 10-second refresh and a magnetic back that sticks to the safe wall.
Details
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Who it's for
- Best budget digital in Gun Safe Hygrometer – 4 Picks, Target Humidity and a Salt Test: For owners who want a cheap, stated-accuracy gauge in each safe or one per shelf; it has no backlight, no high/low memory and no remote, so you open the door to read it.
What we like
- ±2% RH from 30-80%, the only stated tolerance among our picks
- Magnetic back, stand or hanging hole; one AAA battery
- Small enough to put one on each shelf
What to know first
- No backlight and no high/low memory, per the maker
- One owner wishes the two readouts used different digit sizes so humidity and temperature are easier to tell apart
Product details
| Brand | TempPro |
|---|---|
| Manufacturer | TempPro |
| Model | TempAir CORE TP-49-W |
| Part number | TP49-W |
| Dimensions (L x W x H) | 2.2 inches x 0.7 inches x 2.6 inches |
| Item weight | 0.08 pounds |
| Color | White Indoor Thermometer |
| Size | small |
| Type | Digital, single unit |
| Humidity range | 10-99% RH (maker) |
| Humidity tolerance | ±2% RH at 30-80%, otherwise ±3% (maker) |
| Refresh rate | 10 seconds (maker) |
| Power | 1 AAA |
| Mounting | Magnetic back, tabletop stand, hanging mount |
Top rows from the Amazon listing; the rest from the maker pages we checked.
About this item
- Face Icon Comfort Indicator: Humidity temperature gauge features face icons to indicate DRY/COMFORT/WET air conditions, quickly informs you how to adjust your humidifier or dehumidifier to achieve optimal comfort.
- Highly Accurate Sensors: This temperature humidity sensor features a high accuracy of +/-1°F/°C and +/-2% to 3%RH, making it ideal for measuring dynamic environments like greenhouses.
- Fast Refresh Rate: This digital indoor thermometer refreshes every 10 seconds to provide the latest updates for temperature and humidity readings.
- Compact Display with Large Digits: This digital thermometer indoor outdoor features a compact LCD display with large bold digits, allowing you to read the room thermometer indoor from any angle and distance.
- Mini Size, 3-Way Mount, Use Anywhere: Compact mini humidistat with 3 placement options — Tabletop Stand / Magnetic Back / Hanging Mount, easily fits a nursery, baby room, craft room, grow tent, greenhouse, chick brooder, RV, outdoor patio, kitchen, guitar room, office or cellar.
From the product's Amazon listing, as of Nov 7, 2026, 7:59 PM UTC. The seller writes this text, not us, and Amazon may change it.
What owners say
Summarized from 2 owner discussions and review pages we read.
Praise
- Readings match owners' other sensors closely
- Small, with a magnet that holds on steel
- Several owners run one in each safe or room
Complaints
- One owner wants the humidity and temperature digits in different sizes
- No backlight, so it is hard to read in a dark safe
Sources: SIG Talk: Inexpensive hygrometer (check humidity level in your safe) · Walmart customer reviews: TempPro TP49BW
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