Round Digital Thermometer Hygrometer 4 Pack Mini LCD Temperature Humidity Gauge 45mm Embedded Panel Meter for Car Cabin Room Humidor Wine Cabinet Reptile Enclosure Acrylic Box

This 4 pack round digital thermometer hygrometer set is designed for builders and everyday users who need compact, always-on monitoring of temperature and relative humidity in enclosed spaces. Each mini LCD meter is a self-contained gauge that displays temperature in °C and humidity in %RH at the same time, making it ideal for quick checks in a car cabin, room, cigar humidor, wine cabinet, reptile enclosure, acrylic display box, or DIY storage container. The round, embedded style body is intended for panel mounting so you can create a clean, professional-looking installation without bulky external sensors.

Each meter integrates a temperature sensor and a capacitive humidity sensing element (sensor type varies by module revision) with a small microcontroller that periodically samples the environment and updates the LCD. Because the sensing is internal, readings reflect the air conditions around the meter body; for best accuracy, mount the gauge where air can circulate and avoid placing it directly against wet surfaces, heat sources, or direct sunlight. In sealed boxes (humidors, dry boxes, terrariums), allow time for the internal sensor to equilibrate after opening/closing the lid or after adding moisture sources.

The round front bezel and cylindrical body are optimized for embedded installation. Typical use is a circular cutout in the panel, then press-fit the gauge from the front so the bezel sits flush. Depending on the exact production batch, retention may be via friction fit or small side clips. If your panel is thicker or the cutout is slightly oversized, a thin gasket, foam tape, or a small bead of non-corrosive silicone can be used to stabilize the fit (ensure it does not block airflow to the sensor).

Power is provided by an internal coin-cell battery (battery model and included/not included status can vary by seller batch and revision—verify upon receipt). These meters are intended for low-power continuous operation; update rate and battery life depend on firmware and display drive settings, so for critical applications you should validate runtime in your environment.

• Pack quantity: 4 pcs round digital thermometer hygrometer meters
• Display: LCD, dual readout (temperature + relative humidity)
• Temperature unit: °C (as shown on display)
• Humidity unit: %RH
• Form factor: round embedded/panel meter
• Nominal face size: 45mm class (as stated; exact bezel OD may vary by revision)
• Mounting: press-fit/snap-in panel mount; required cutout diameter varies by module revision (measure the unit before cutting)
• Sensor location: internal (no external probe)
• Power: coin-cell battery powered (battery type varies by module revision—check label/datasheet)
• Intended environment: indoor/enclosed spaces; avoid condensation directly on the meter for best stability

• Cigar humidor monitoring (multi-zone: lid area vs. lower tray)
• Wine cabinet and beverage cooler humidity/temperature checks
• Reptile/terrarium enclosure monitoring (cool side vs. warm side)
• 3D printer filament dry box or storage tote monitoring
• Car cabin, glove box, or RV compartment quick reference
• Instrument cases, camera dry cabinets, and acrylic display boxes

• For accurate readings, mount away from direct heat vents, humidifier outlets, or cold plates; allow airflow around the meter body.
• If installing in an acrylic box, deburr the cutout to prevent stress cracks; test-fit first and avoid overtightening/forcing.
• In humid environments, avoid water droplets contacting the LCD window; if condensation occurs, relocate or improve ventilation.
• For multi-point monitoring, place the 4 pcs meters at different heights/locations to identify gradients (top vs. bottom, near door vs. rear).

4 pcs Round Digital Thermometer Hygrometer Meters