Serundo Auto digital hygrometer thermometer 20-pack — compact LCD, ±1°F/±3% RH accuracy

Serundo Auto's compact digital hygrometer thermometer delivers fast, accurate temperature and humidity readings for indoor and sheltered outdoor spaces.

This small, battery-powered meter gives you clear temperature and relative humidity measurements on an easy-to-read LCD so you can monitor environments like rooms, greenhouses, terrariums, labs, storage and more. The affordable 20-pack is ideal for multiple locations or for placing several sensors throughout a single space to track local variations.

How quickly and accurately does this hygrometer report conditions?

The unit updates readings automatically every 10 seconds using a sensitive sensor for responsive monitoring. Temperature accuracy is ±1°F and humidity accuracy is ±3% RH, good for everyday environmental checks where precise climate control isn’t required.

• Measurement refresh rate: ~10 seconds
• Temperature accuracy: ±1°F (can be toggled between °F and °C)
• Humidity accuracy: ±3% RH
• Operating range: 32°F–158°F (0°C–70°C), 10%–99% RH

What settings and spaces can it be used in?

This versatile mini thermo-hygrometer works in homes and many specialized environments where basic monitoring is needed. It’s small enough for hobby enclosures yet robust enough for workshops and storage rooms.

• Indoor: living rooms, bedrooms, offices, nurseries
• Specialty: reptile terrariums, aquariums, hermit crab habitats
• Commercial: warehouses, labs, instrument workshops, hotels
• Hobby/agriculture: greenhouses, aquaculture setups

How is the device powered and how long will it last?

Each meter runs on one primary LR44 button cell, plus a backup button cell for extended reliability. Typical single-cell operating time can reach up to nine months under normal use, making the meters low-maintenance for long-term placement.

• Power: LR44 button battery plus backup cell included
• Battery life: up to ~9 months per cell under typical usage
• Low-maintenance placement: compact size for semi-permanent monitoring
• Customer support available for any operational issues

How will the display and controls suit everyday use?

The clear LCD shows both temperature and humidity at a glance and offers a simple toggle between Fahrenheit and Celsius. Its minimalist interface makes it quick to read and easy to install where you need frequent visual checks.

• Display: easy-to-read digital LCD with dual readout
• Units: switch between °F and °C for preference or region
• Form factor: compact footprint for shelves, walls, or enclosures
• Mounting: freestanding or placed on flat surfaces

Who this is for: This 20-pack of Serundo Auto digital hygrometer thermometers is made for people who need multiple, low-cost environmental monitors — facility managers, hobbyists with several enclosures, retailers tracking display conditions, or homeowners wanting to map temperature and humidity differences across many rooms. If you need quick, repeatable readings across several locations with minimal maintenance, these compact meters offer practical coverage and straightforward operation.