1. HIGH-ACCURACY TEMPERATURE AND HUMIDITY GAUGE – Pre-calibrated for exceptional accuracy. Monitors indoor temperatures from +14.2ºF to +122ºF, outdoor temperatures from -40ºF to +158ºF, and humidity levels from 20% to 95%. Temperature accuracy is within +/-1.8ºF and humidity accuracy is within +/-5% for reliable readings. 2. DISPLAY DATA FROM 3 SENSORS WITH 328FT/100M TRANSMISSION – Featuring advanced wireless technology for stable data transmission. Updates temperature and humidity readings every 30 seconds within a 330 ft radius, allowing you to monitor multiple locations effortlessly. 3. USER-FRIENDLY FEATURES – Stay informed about your environment in real-time. Monitor indoor and outdoor conditions with trend indicators, switchable °C and °F settings, comfort indicators, outdoor temperature and humidity alerts, daily maximum/minimum data, and low battery notifications. 4. USB AND BATTERY POWERED WITH 4.5 INCH DISPLAY – Connect via USB to keep the backlight on, with adjustable brightness settings (high, low, off). The compact display features clear, bold black information for easy reading. It can be used on a tabletop or mounted on a wall for convenient visibility. Practical applications include monitoring home environments, ensuring optimal conditions for plants, and tracking humidity levels in wine cellars. Perfect for anyone needing precise climate control in their living spaces or specialized areas.