LSENLTY HD09 EN 01 Portable Carbon Monoxide Detectors User Manual

Table of Contents

What should I do if the device shows ERR on the screen?

If the device shows ERR on the screen, it means that the gas sensor is not working properly. You should contact customer support for assistance.

How long does it take for the device to warm up?

The warm-up process lasts about 35 seconds. After that, the sensor can work normally.

Can I adjust the screen brightness?

Yes, you can adjust the screen brightness by short pressing the G button. There are three levels of brightness: high, medium, and low.

How can I turn off the alarm?

What happens if the battery voltage is low?

If the battery voltage falls lower than the working voltage, the device will sound an audible alarm every minute.
After the fifth alarm, the device will automatically turn off. It is recommended to replace the battery as soon as possible.

How to turn on the device:
- Long press the power button to turn on the device.
- Note: After the device is turned on, the gas sensor starts immediately to warm up in order to calibrate the detection sensitivity and improve the measuring accuracy. The warm-up process lasts about 35 seconds and then the sensor can work normally.
How to turn off the device:
- Long press the power button to turn off the device.
How to adjust the screen brightness:
- Short press the G button to switch the screen brightness between three gears: high, medium and low.
How to switch the temperature unit:
- Short press the power button to switch the temperature unit between Celsius (℃) and Fahrenheit (℉).
How to turn on or turn off the alarm:
- Short press the S button to turn on or turn off the alarm.
Automatic backlight off:
- If there is no button operation, the device will automatically turn off the screen backlight and enter power saving mode after 30 seconds. In power saving mode, the gas sensor continues working and monitoring the carbon monoxide concentration. You can short press or long press any one of the three buttons to light up the screen again.
Low battery voltage alarm:
- When the battery voltage falls lower than the working voltage, the device will sound an audible alarm of “di-di-di” every minute. After the fifth alarm, the device will automatically turn off.

According to different carbon monoxide concentration, the device will display a colored alarm icon on the screen and sound an audible alarm:

51-100 ppm: The alarm sounds 3 times every 3 minutes: di-di-di.
101-200 ppm: The alarm sounds 5 times every 3 minutes: di-di-di-di-di.
201-999 ppm: The alarm sounds continuously. You can press the S button to stop the alarm.

Note: If the gas sensor doesn’t work, the screen shows ERR and the alarm sounds 10 times every 30 seconds.

Cautions for Use

Do not soak this product in water or place it in an environment with temperature over 60℃. Keep it away from fire sources.
This product is a precision measuring instrument, please do not disassemble it by your self.
Do not use this product frequently in places with poor air quality, such as dusty environments.
When measuring temperature and humidity inside a car, do not leave this product in direct sunlight for a long time.
At the end of the product’s life, please dispose of the product and the battery at a corresponding recycling center. Do not throw this product away with normal household wastes.