• Real-time wireless monitoring of temperature (-20 to 65 ℃) and humidity (0-100% RH) via Bluetooth 5.0. • High accuracy with a temperature error of ±0.5 ℃ and a humidity error of ±5%, updates every second. • Compact and portable design (1.5 x 1.5 x 0.62 inches) with a hanging hole, replaceable battery with a 1-year lifespan. • Data storage up to 100 days, with free export in CSV format. • Mobile app with notifications for values outside the preset temperature and humidity range.