All domestic electronic components for reliability. The main control MCU PT32L076 and sensors support ultralow power operation, with a 3axis accelerometer (SC7A20H) to detect vibration and wake/sleep the display, reducing overall power use. Rechargeable lithium battery with smart charging management. We recommend a full initial charge; charging also calibrates the product automatically. Data fluctuations during charging are normal. Key specifications Sensor models: NSHT30 (temperature/humidity) and SC7A20H (3axis accelerometer) MCU: PT32L076 Temperature: accuracy ±0.3 C; range 40 to 125 C Humidity: accuracy ±3% RH; range 0% to 100% RH Long battery life and smart calibration Lab tests: a 150 mA lithium battery can run for more than six months Temperature and humidity calibration is integrated in the software; no extra steps required by the user Use scenarios Remote environmental monitoring in offices, data centers, or greenhouses Batterypowered smart home or building sensors that wake on vibration Portable data loggers for labs, coldchain, or field measurements This module combines function, reliability, and ease of use, suitable for applications requiring low maintenance and long run time.