Feature: 1. [Accurate HCHO Detection] The assembled HCHO temperature humidity detector can accurately detect indoor HCHO levels to guard family health and well being. 2. [Comprehensive Monitoring] The device can also measure indoor temperature and humidity levels, providing real time insights into environmental changes for enhanced comfort. 3. [Clear Display] Featuring high definition organic light emitting diode screen, this HCHO temperature humidity meter displays detection data clearly and intuitively. 4. [Skill Enhancing Design] With a sophisticated design that combines fun and practicality, this kit not only entertains but also improves actual soldering skills. 5. [Versatile Application] Ideal for homes, schools, and other indoor settings, this kit is a useful environmental testing instrument that fits a wide range of applications. Specification: Item Type: HCHO Temperature Humidity Detector Material: ABS Plastic. Package List: 1 x SMT IAP15W413AS Microcontroller1 x SMT Active Buzzer1 x Temperature and Humidity Sensor1 x HCHO Sensor SH201 x Organic Light Emitting Diode Screen3 x White SMT Button1 x SMT Electrolytic Capacitor 220V 16V1 x 2 Pin Plug in for Android Power Socket1 x SMT Transistor3 x SMT Capacitor 104F3 x SMT Resistor 1K2 x SMT Resistor 4.7K6 x M3x6 Screw4 x Copper Pillar4 x Plastic Copper Pillar1 x PCB Board1 x Acrylic Shell1 x for Android Power Cord1 x Small Plastic Box