
SMARTRO
Once you have it, you'll love it!
Swipe right to learn more?

- This humidity gauge is built in with high precision sensor.
- Accurate in Humidity and temperature test.
- SC42 Humidity and temperature monitor is the perfect household device to keep you and your family's living conditions optimal. Reliable and highly accurate reading.
Specifications:
- Switchable mode : °C/°F
- Temperature Tolerance: ±0.5°F
- Humidity Tolerance: ±2%RH
- Temperature Range: -4~158°F ( -20~70°C)
- Humidity Range: 1~99%RH(relative humidity)
- Power Supply: 2*1.5v batteries (not included)



Supports Health and Sleep
- Best temperature humidity for health: 64.4-77? (18-25?),40-70% RH (comfortable)
- Utilize this highly accurate humidity monitor to ensure the perfect night’s sleep, avoid headaches and improve general well being day in and day out.
- Instantly distinguish between humidity conditions by different color.
- High precision thermometer

Various Mounting Selections
- You have simple steps to get this indoor outdoor thermometer mounted.
- The digital hygrometer has a stand for table top use and strong magnets if you wish to have your device attached to a household appliance.
- Also can be inserted into a wall hanging hole.

Wide Applications
- This digital thermometer indoor can be easily attached to your refrigerator, wall or placed on a table.
- Suitable for baby’s room, nursery, office, closet, incubator, greenhouse, garden, wine cellar, basement critter terrarium etc. Great present for Christmas.
![]() SMARTRO SC42 | ![]() Other Brands | |
|---|---|---|
| Customer Reviews | — | — |
| Price | — | — no data |
| Temperature Range | -4° to 158°F; -20° to 70°C | 32° to 122° F; 0° to 50°C |
| Temperature Accuracy | +/-0.5°F | +/- 2°F |
| Humidity Range | 1% to 99% RH | 16% to 98% RH |
| Humidity Accuracy | +/- 2% RH | +/- 3%, from 21% to 80% RH |
| Frequency of Readings | 10 seconds | 15 seconds |
| High/Low Records | 24 hours, all-time | 24 hours |
| User-Set Calibration | ? | no data |
| Mounting Options | Tabletop design, wall hanging hole, magnetic back | Fold-out table stand, mounting clip |
| Backlit | ? | no data |
| Product Size | 3.4" H x3.4" W | 3" H x 2.5" W |
![]() SMARTRO SC92 Wireless Digital Hygrometer Indoor Outdoor Thermometer | ![]() SMARTRO SC91 Projection Alarm Clock with Weather Station | ![]() SMARTRO SC31B Digital Projection Alarm Clock | ![]() SMARTRO SC93 Wireless Weather Station with Indoor Outdoor Temp & Humidity | |
|---|---|---|---|---|
| Customer Reviews | — | — | — | — |
| Price | — | — | — | — |
| Offer | 26.99 | 37.99 | 34.99 | 39.99 |
| Temperature accuracy | ±0.5? | ±5? | ±5? | ±1.8? |
| Humidity accuracy | ±2%RH | ±5%RH | ±5%RH | ±5%RH |
| Remote sensor | ? | ? | ? | ? |

- This humidity gauge is built in with high precision sensor.
- Accurate in Humidity and temperature test.
- SC42 Humidity and temperature monitor is the perfect household device to keep you and your family's living conditions optimal. Reliable and highly accurate reading.
Specifications:
- Switchable mode : °C/°F
- Temperature Tolerance: ±0.5°F
- Humidity Tolerance: ±2%RH
- Temperature Range: -4~158°F ( -20~70°C)
- Humidity Range: 1~99%RH(relative humidity)
- Power Supply: 2*1.5v batteries (not included)



Backlit LCD Display
- A simple touch on the top to turn on backlit for a few seconds.
- Maximum and Minimum records of humidity/temperature for last 24 hours or all-time and also indicates the current trends.

The Actual Thermometer You Will Get

Supports Health and Sleep
- Best temperature humidity for health: 64.4-77? (18-25?),40-70% RH (comfortable)
- Utilize this highly accurate humidity monitor to ensure the perfect night’s sleep, avoid headaches and improve general well being day in and day out.
- Instantly distinguish between humidity conditions by different color.
- High precision thermometer

Various Mounting Selections
- You have simple steps to get this indoor outdoor thermometer mounted.
- The digital hygrometer has a stand for table top use and strong magnets if you wish to have your device attached to a household appliance.
- Also can be inserted into a wall hanging hole.

Wide Applications
- This digital thermometer indoor can be easily attached to your refrigerator, wall or placed on a table.
- Suitable for baby’s room, nursery, office, closet, incubator, greenhouse, garden, wine cellar, basement critter terrarium etc. Great present for Christmas.
![]() SMARTRO SC42 | ![]() Other Brands | |
|---|---|---|
| Customer Reviews | — | — |
| Price | — | — no data |
| Temperature Range | -4° to 158°F; -20° to 70°C | 32° to 122° F; 0° to 50°C |
| Temperature Accuracy | +/-0.5°F | +/- 2°F |
| Humidity Range | 1% to 99% RH | 16% to 98% RH |
| Humidity Accuracy | +/- 2% RH | +/- 3%, from 21% to 80% RH |
| Frequency of Readings | 10 seconds | 15 seconds |
| High/Low Records | 24 hours, all-time | 24 hours |
| User-Set Calibration | ? | no data |
| Mounting Options | Tabletop design, wall hanging hole, magnetic back | Fold-out table stand, mounting clip |
| Backlit | ? | no data |
| Product Size | 3.4" H x3.4" W | 3" H x 2.5" W |
![]() SMARTRO SC92 Wireless Digital Hygrometer Indoor Outdoor Thermometer | ![]() SMARTRO SC91 Projection Alarm Clock with Weather Station | ![]() SMARTRO SC31B Digital Projection Alarm Clock | ![]() SMARTRO SC93 Wireless Weather Station with Indoor Outdoor Temp & Humidity | |
|---|---|---|---|---|
| Customer Reviews | — | — | — | — |
| Price | — | — | — | — |
| Offer | 26.99 | 37.99 | 34.99 | 39.99 |
| Temperature accuracy | ±0.5? | ±5? | ±5? | ±1.8? |
| Humidity accuracy | ±2%RH | ±5%RH | ±5%RH | ±5%RH |
| Remote sensor | ? | ? | ? | ? |
SMARTRO
Once you have it, you'll love it!
Swipe right to learn more?
































