Introduction
Thank you for choosing the SMARTRO SC92 Wireless Indoor/Outdoor Humidity and Temperature Monitor. This device is designed to provide accurate and reliable measurements of both indoor and outdoor environmental conditions, helping you maintain optimal comfort and health in your home or other spaces. Please read this manual thoroughly before use to ensure proper operation and longevity of your device.
Package Contents
- 1 x Main Display Unit (Receiver)
- 1 x Wireless Remote Sensor (Transmitter)
- 1 x Instruction Manual
Product Features
- High Accuracy: Equipped with a world-leading Swiss sensor, the SC92 detects subtle humidity and temperature changes with an accuracy of ±0.5°F and ±2% RH. It comes pre-calibrated and supports manual calibration for enhanced precision.

Image: The main display unit highlighting its built-in industrial sensor for high accuracy in temperature and humidity measurements.
- Wireless Transmission: Monitor up to 4 locations (with additional sensors, sold separately) with a wireless transmission range of up to 200ft in open areas. The device updates readings every 10 seconds.

Image: The main display unit showing its capability to track temperature and humidity from up to 4 places using wireless sensors.
- Comprehensive Tracking: Displays highest and lowest indoor/outdoor temperatures and humidity from the past 24 hours or all-time. A comfort indicator quickly shows if conditions are deviating from ideal levels.

Image: The main display unit featuring a comfort level indicator to easily assess environmental conditions.
- Easy-to-Read Backlit Display: Features a 3.5-inch HD LCD screen with large digits. A simple touch on the top activates the backlight for 10 seconds, ensuring clear readability in low-light conditions.

Image: The compact main unit with its large, easy-to-read LCD display, showing both indoor and outdoor readings.

Image: Illustration of the main unit's display in normal mode and with the touch-activated backlight for improved visibility.
- Versatile Placement: The main unit offers a retractable stand for tabletop use, magnets for metallic surfaces (like refrigerators), and a wall-mount option. The remote sensor can also be wall-mounted.

Image: The main unit demonstrating its three flexible placement options: wall-mount, magnetic attachment, and tabletop stand.
Setup Guide
- Install Batteries in Remote Sensor: Open the battery compartment on the back of the wireless remote sensor. Insert 2 x AA batteries, ensuring correct polarity (+/-). Close the compartment.
- Install Batteries in Main Display Unit: Open the battery compartment on the back of the main display unit. Insert 2 x AAA batteries, ensuring correct polarity (+/-). Close the compartment.
- Pairing the Sensor: The main unit will automatically search for the remote sensor. Ensure both units are within range. The outdoor temperature and humidity readings should appear on the main unit's display. If pairing fails, press and hold the 'CH' button on the main unit for 3 seconds to manually search for the sensor.
- Select Temperature Unit: Press the '°F/°C' button on the back of the main unit to switch between Fahrenheit and Celsius.
- Select Channel (if using multiple sensors): If you have multiple remote sensors, use the channel switch inside the battery compartment of each sensor to set a unique channel (1, 2, or 3). On the main unit, press the 'CH' button to cycle through the channels and display readings from different sensors.
Operating Instructions
- View Current Readings: The main display unit continuously shows indoor and outdoor temperature and humidity.
- Activate Backlight: Lightly touch the top of the main display unit to activate the backlight for 10 seconds.
- View Max/Min Records: Press the '+/MEM' button to cycle through the 24-hour maximum, 24-hour minimum, all-time maximum, and all-time minimum temperature and humidity records.
- Clear Max/Min Records: While viewing the 24-hour or all-time Max/Min records, press and hold the '+/MEM' button for 3 seconds to clear the displayed records.
- Manual Calibration: The device comes pre-calibrated. If you need to manually calibrate, refer to the detailed instructions in the included paper manual.
Placement Options
- Main Display Unit:
- Tabletop: Use the retractable stand on the back for stable placement on any flat surface.
- Magnetic: Attach the unit to metallic surfaces like a refrigerator using the built-in magnets.
- Wall-Mount: Use the hanging hole on the back to mount the unit on a wall using a screw (not included).
- Wireless Remote Sensor: Place the remote sensor in a location that provides accurate readings and is protected from direct sunlight and precipitation. Ensure it is within the 200ft transmission range of the main unit. Ideal locations include under an eave, on a shaded wall, or in a covered outdoor area.
Maintenance
- Cleaning: Wipe the device clean with a soft, damp cloth. Do not soak the unit in water or use abrasive cleaners.
- Battery Replacement: Replace batteries in both units when the low battery indicator appears on the display. Ensure correct battery type and polarity.
Troubleshooting
| Problem | Solution |
|---|---|
| No outdoor reading on main unit. | Ensure batteries are correctly installed in the remote sensor. Press and hold the 'CH' button on the main unit for 3 seconds to re-establish connection. Move sensor closer to the main unit. |
| Inaccurate readings. | Ensure the remote sensor is not in direct sunlight or exposed to extreme weather. Allow units to stabilize for 30 minutes after setup. Consider manual calibration if necessary (refer to manual). |
| Display is dim or fading. | Replace batteries in the affected unit. The backlight is temporary and not always on. |
| Missing segments on display numbers. | This indicates a potential defect. Please contact customer support for assistance. |
Specifications
| Feature | Detail |
|---|---|
| Indoor Temperature Range | 14.2°F to 122.0°F (-9.9°C to 50.0°C) |
| Outdoor Temperature Range | -40°F to 158.0°F (-40°C to 70.0°C) |
| Humidity Range | 1% to 99% RH |
| Temperature Accuracy | ±0.5°F |
| Humidity Accuracy | ±2% RH |
| Response Time | 10 seconds |
| Wireless Transmission Range | Up to 200ft (in open area) |
| Main Unit Power Source | 2 x AAA batteries (not included) |
| Remote Sensor Power Source | 2 x AA batteries (not included) |
| Display Size | 3.5-inch HD LCD |
| Product Dimensions | 3.4 x 3.4 x 1.1 inches (Main Unit) |
Official Product Videos
SC92 Wireless Indoor Outdoor Thermometer Overview
Video: An overview of the SMARTRO SC92 wireless indoor/outdoor thermometer, demonstrating its features and ease of use.
SMARTRO SC92 Indoor and Outdoor Thermometer Features
Video: A detailed look at the SMARTRO SC92 indoor and outdoor thermometer, showcasing its various functions and benefits.
SMARTRO SC92 Professional Indoor Outdoor Thermometer (Quick Look)
Video: A brief preview demonstrating the SMARTRO SC92 Professional Indoor Outdoor Thermometer.
Warranty and Support
SMARTRO is committed to providing high-quality products and excellent customer service. This product typically comes with a standard warranty, and an extended 3-year warranty may be available upon registration. For any questions, troubleshooting assistance, or warranty claims, please contact SMARTRO customer support:
- Email: support@smartro.co
- Phone: +1 (302) 287-5798
- Website: www.smartro.co






