Features 1、Testing and Alarm: This multifunctional detector can simultaneously measure temperature and humidity, efficient and practical, supports buzzer and voice alarm modes. 2、Working Modes: Normal working time is about 10‑11 hours. In energy saving mode, the indicator light works, and the product can be continuously tested for about 30‑45 days. 3、Screen and Sensor: The temperature humidity gauge adopts digital display LCD color screen, which is clear and intuitive, and high accuracy sensor ensures reliable measurement. 4、Humanized Design: The detector is lightweight and compact, convenient to carry and store, with back bracket and hanging rope for easy placement, which has strong practicality. 5、Applicable Places: This temperature and humidity meter can be used for home rooms, outdoor camping tents, fireplaces, in cars, laboratories, factories, and business places, etc. Specification Item Type: Temperature Humidity Meter Application Technology: Air Natural Flow Model: VT-CO02 Display Mode: LCD Color Screen Digital Display Sensor Type: Electrochemical Sensor, Temperature and Humidity Sensor Size: Approx. 84 x 55 x 19.5mm / 3.3 x 2.2 x 0.8in Battery: 3.7V 1000mAh Polymer Lithium Battery (Built in) Charging Time: About 3-4h Normal Working Time: Screen Light, About 10-11 hours Low Power Mode Working Time: Screen Off, Indicator Light On, Continuous Working about 30-40 Days Package List 1 x Temperature Humidity Meter 1 x USB Cable 1 x Hanging Rope 1 x User Manual