Wintact WT8812 Compound Gas Monitor Detection Alarm 1. Gas measurement: The sensor warms up when the countdown is started. The refresh rate is 1HZ. Do not charge during the measurement of combustible gas, otherwise it may explode. 2. Highlow alarm: 4 default highlow alarms, 4 types of alarms, and the alarm sound can be turned off. 3. Data recording: 1000 pieces of data can be recorded. The default interval of data recording is 5 seconds, which can be set in inL of the setting mode. When the interval is set to 0 seconds, the data logging function fails. The delete operation will delete all recorded data. 4. Temperature display: set the unit to Celsius or Fahrenheit, the default unit is Celsius 5. Automatic shutdown: automatic shutdown without operation within 30 minutes. This feature is turned on by default. 6. Battery capacity: It is forbidden to start the unit to avoid measurement errors or explosion. If the battery is low, it may turn off automatically. Charging time: about 4 hours. Discharge time: about 8 hours. 7. Zero point calibration: It is recommended to calibrate the device at zero point or zero offset every month to ensure the high accuracy of the measurement (please ensure that the battery power is above 2bar) calibration, and place it in the air for a period of time after powering on. Make sure that the device body temperature is slightly higher than the ambient temperature. 8. Temperature compensation: the measured data is compensated within the range of -20 to 50 degrees Celsius 9. Software error: The machine crashesshutdown indicates that an error occurred during the operation. If the software is forced to shut down, please press the onoff button to activate the device 10. Adopt high-quality gas sensor, safe and reliable, accurate measurement and stable performance. 11. It has excellent sensitivity and repeatability, is easy to use and maintain, and meets the requirements for high reliability of equipment in industrial field safety monitoring. 12. The she