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USER MANUAL 306649 Bearware
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QR code image containing encoded data, no visible human-readable textENG: Current drivers, user manuals and other relevant documents for this product can be found on our homepage.
Thank you for choosing a BRANDSON product. Please read the following user manual carefully so that you can enjoy the purchased product for a long time.
1. Scope of delivery
- CO_2 meter
• Power supply unit + USB-C charging cable - User manual
2. Technical data
| Power supply 5V DC | |
| Battery Li Ion 2000 mAh | |
| CO2measuring range 400 - 5000 ppm | |
| Tolerance (CO2) | • 400-2000: ±8% +80ppm• 2000-5000 not specified |
| Temperature measuring range -9.9°C - +50°C (±1°C; 0.1°C resolution) | |
| Humidity measuring range | 1% - 99% |
| Tolerance (humidity) | • 40-80%: ±5%• 1-40&80-99%: ±8% under CO2 testing |
| Features | • Alarm function (alarm)• Alarm function (CO2)• Snooze function• °C /°F - display• 12/24-hours display |
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3. Additional instructions
Before using, make sure that the device is not damaged. If this is the case, then do not use it. The device must not be exposed to moisture, direct sunlight or dust. Do not immerse the device in water. Do not throw it into fire, there is a risk of explosion. Before using the product, ensure that the available supply voltage corresponds to the operating voltage indicated on the specification plate. The product is intended only for private use and not for medical purposes or for public information. This device is suitable only for indoor use.
Caution!
Keep the batteries and the appliance out of the reach of children. Batteries contain acids that are harmful to health. Charge the device when the battery level is low. Never throw batteries into a fire and do not short-circuit them.
- Product details
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1 2 3 OPEN 700 ALARM CO2 CO2 530 PPM HISTORY EXCELLENT GOOD MEDIUM POOR -24 -18 -12 -9 -6 -3 0h 2400 1000 600 17 4 25.0 12:00 68% 11 SET ALARM CO2 MEM + 10 9 14 15 16 818 English
| 1 "Ventilate" symbol |
| 2 CO2 display |
| 3 CO2 alarm symbol |
| 4 Temperature display |
| 5 Time of day |
| 6 "SET" button |
| 7 "-" button |
| 8 "MEM" button |
| 9 "+" button |
| 10 "ALARM CO2" button |
| 11 Humidity display |
| 12 Comfort symbol |
| 13 CO2 alarm symbol |
| 14 USB-C power connection |
| 15 "Reset" button |
| 16 ON/OFF button |
| 17 CO2 value history |
5. Initial use
Remove the product from the packaging and remove all packaging material.
Connect the supplied USB charging cable to the device and connect it to the 5V DC power supply unit. If you want to use the device in battery mode, fully charge the device.
Press and hold the “On/Off” button for approx. 3 seconds to switch the device on or off. A 60-second countdown appears on the screen, indicating that the CO_2 sensor is being initialised. The CO_2 values are then shown on the display.
When using the charging cable, the battery inside the device is charged. If the power supply is interrupted, the device switches to battery operation or it can be operated directly with the built-in battery.
5.1 Battery
You can check the battery level in the display at any time by looking at the battery level symbol.
When the voltage of the built-in battery is low, the battery symbol flashes on the screen. The product turns off the backlight, carbon dioxide detection function, etc. to ensure that the time function works continuously.
While the battery is charging, the battery symbol is displayed continuously. Once the battery is fully charged, the symbol disappears.
6. Time and alarm setting
Press and hold the "SET" button for approx. 3 seconds to call up the time setting.
- The 12/24 hour display starts to flash. Press the "+" or "-" button to set.
- Press the "SET" button to confirm. The hour then flashes. Set the current hour and press the "SET" button again to confirm.
- Repeat the process with the minute display.
- Then set the alarm time, starting with the hour. Then press the "SET" button to confirm the entry.
- Repeat the process with the minute display.
- The setting mode is then exited. You can also save the setting and exit the setting mode by not pressing any button for about 30 seconds.
6.1 Enabling/disabling the alarm
Press the "SET" button briefly to switch the alarm function on or off. When the alarm is switched on, a symbol appears above the time in the display. The alarm sounds for 1 minute. You can touch the "Snooze" button to activate the snooze function for 5 minutes. Press any other button on the device to turn off the alarm and stop the alarm directly.
7. Minimum and maximum values of temperature and humidity
Press the “MEM” button to show the display between the minimum and maximum measured value. The display cycle is: Maximum → Minimum → Return to normal display mode.
If you press and hold the “MEM” button for approx. 3 seconds while the maximum and minimum values are displayed, you can delete the maximum and minimum values and restart the recording.
The recordings of the maximum and minimum values are automatically deleted and re-recorded every day from 0:00.
8. Calibration of the CO2 concentration
Due to transport, vibration, ageing and other reasons, the detection accuracy of the sensor may be reduced. Deviations are corrected by calibration. The device has an automatic and a manual calibration option. It is advisable to use automatic calibration. Alternatively, you can also carry out manual calibration. The two methods are described below.
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8.1 Automatic calibration
After starting the sensor, the minimum carbon dioxide concentration values are stored for 48 hours in order to determine the basic value of the outdoor atmospheric carbon dioxide concentration. The lowest carbon dioxide concentration values are stored for 7 days in order to determine the basic value of the atmospheric carbon dioxide concentration (approx. 400 ppm).
Make sure that the sensor is in an environment where the atmospheric level is the same as outdoors (approx. 400 ppm) during this time.
The automatic calibration function is suitable for office, home and other environments that are isolated from weather. It is not suitable for agricultural greenhouses, farms, warehouses and other places.
8.2 Manual calibration of CO2 concentration
During calibration, the product must be positioned in an environment with a CO2 concentration equal to the outside air (approx. 400 ppm) to ensure that the CO2 concentration in the environment is stable.
In normal display mode, press and hold the “+” button for 3 seconds to enter manual calibration mode. “CAL” flashes on the display. At this time, you can press the “SET” button to confirm the entry, or press the “+” button or no button for 30 seconds to exit the calibration mode.
The duration of the manual calibration is approx. 20 minutes. During calibration, you can press the “+” button to cancel and exit the mode in advance.
9. Carbon dioxide alarm
Press the “ALARM CO _2 ” button to switch the carbon dioxide alarm function on or off.
Press and hold the “ALARM CO 2 ” button for 3 seconds to call up the setting for the CO 2 concentration alarm. The CO _2 concentration value flashes, press the “+” or “-” button to set the desired value.
Press the “ALARM CO _2 ” button to confirm the setting and exit the setting mode. You can also save the setting and exit the setting mode at any time by not pressing any button for 30 seconds.
10. Dimming the backlight
You have the option of dimming the device backlight by touching the "+" button.
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11. CO₂concentration values
| Symbol Meaning | |
| EXCELLENT | 400-600 ppm |
| GOOD | 601-1000 ppm |
| MEDIUM | 1001-1500 ppm |
| POOR | 1501-2000 ppm |
| POOR | 2001 ppm and higher |
If the CO2 concentration is above 1500ppm, a window symbol ( ) appears in the display to remind the user to open the window for ventilation. If the CO2 concentration is above 2000 ppm, a symbol ( ) appears in the display to indicate to the user that the values are too high.
12. Additional instructions
The update frequency for temperature, humidity and carbon dioxide concentration is about 5 seconds.
Avoid device vibration or direct wind on the sensor during carbon dioxide measurement as this may cause the carbon dioxide values to fluctuate.
12.1 Switching °C / °F
To switch the temperature display between °C and °F, briefly press the “-” button once.
13. Safety instructions and disclaimer
Never try to open the device to repair or make modifications. Avoid contact with the mains voltage. Do not short-circuit the product. The device is not waterproof, therefore please use it only in dry surroundings. Protect it from high humidity, water and snow. Keep the product away from high temperatures. Do not expose the product to sudden changes in temperature or strong vibrations, as this could damage the electronic components. Check the device for damage before using it. The product should not be used if it was subject to impact or has been damaged in some other manner. Please comply with the local regulations and restrictions.
Do not use the product for purposes other than those described in the user manual. This product is not a toy. Keep it out of the reach of children or mentally disabled persons. Any repair or modification to the product, which is not carried out by the original supplier, will void any warranty and guarantee claims. The product should only be used by those who have read and understood this user manual. The specifications of the product may be changed without any special prior notification.
14. Disposal instructions
In line with the European WEEE directive, electrical and electronic products should not be disposed of along with domestic waste. Their components have to be separately sent for recycling or disposal, because improper disposal of toxic and dangerous components may permanently damage the environment. According to the electrical and electronic equipment act (ElektroG), you are obliged (as a consumer) to return (free of charge) electrical and electronic devices to the manufacturer, the point of sale or the public collection points set up for this purpose at the end of their service life. The relevant local laws regulate the details in this regard. The symbol displayed on the product, in the user manual or/and on the packaging refers to these regulations.
With this manner of sorting, recycling and disposal of used products, you make an important contribution towards protecting our environment. For information on authorised safe assembly points in your area, please contact your local city or municipal office.
15. Instructions for battery disposal
In conjunction with the sale of batteries along with the supply of devices that include batteries, the supplier is obliged to point out the following to the customer: The customer is legally obliged to return used batteries. He can return used batteries which the supplier offers or has offered as new batteries in his assortment free of charge to the supplier's dispatch warehouse (shipping address).
The symbols shown on the batteries indicate the following: Pb = battery contains more than 0.004 percent lead by weight, Cd = battery contains more than 0.002 percent cadmium by weight, Hg = battery contains more than 0.0005 percent mercury by weight.
The symbol of the crossed-out dustbin means that the battery should not be disposed of in household waste.
WEEE directive 2012/19/EU
WEEE Register no.: DE 67896761
The company WD Plus GmbH hereby certifies that the product 306649 complies with the fundamental requirements and all other relevant stipulations. A complete conformity statement can be obtained from: WD Plus GmbH, Wohlenbergstraße 16, 30179 Hannover
MO-FR 9:30am - 18pm CET
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