JD-3002 Carbon Dioxide Comprehensive Air Quality Temperature Humidity Detector, JD-3002

Instrument instructions:1. After the test, the power of the equipment must be turned off to avoid accidents2. Prevent the instrument from violent vibration3. After placing the instrument for a long time, the odor gas will accumulate in the instrument, which will seriously affect the test results, in this case, the instrument must be placed in a cool and ventilated place, and then used for more than 1 hour (no operation is required during the ventilation process instrument)4. The expired and defective products should be repaired in time.5. Avoid shocking the sensor with gas higher than the measurement range, otherwise it may damage the sensor, and man-made damage is not covered by the warrantyInstrument introduction:1. Digital temperature and humidity sensor2. LCD display3. Mute button: Turn on or off the alarm sound. In the silent mode, the " " symbol is not displayed and there is no alarm sound. The default is to turn on the sound4. "+" button: When setting the alarm value, increase t