Wireless Air Quality Monitor with Indoor Temperature and Humidity

1. Introduction

Thank you for purchasing the WH0290 Wireless Air Quality Monitor with Indoor Temperature and Humidity. To ensure the best product performance, please read this manual and retain it for future reference.

Help
Our product is continuously changing and improving, particularly online services and associated applications. To download the latest manual and additional help, please contact us at support@ecowitt.com or support.eu@ecowitt.net (EU/UK).

2. Get Started

Note: Power up sequence can be performed in the order shown in this section (insert batteries in the Air Quality Monitor first, then Sensor(transmitter).

Attention:

• Do not mix old and new batteries
• Do not mix Alkaline, Standard, Lithium or Rechargeable batteries
• Ensure batteries are installed correctly with regard to polarity +/-
• Please fully charge the included sensor batteries overnight when first use.

If PM2.5 reading is permanently 0 or with a value extremely low after some period of use, it is very likely that the sensor tunnel was occupied by a spider net. You may use a can of compressed air to blow into the inlet of the sensor (open the housing) to see if this can help fixing the problem.

2.1 Parts List

1. One Air Quality Monitor (Receiver)
2. One Air Quality Sensor (Wireless PM2.5 Sensor)
3. One USB Cable
4. One User Manual
5. Two LSD (low self discharge) Ni-MH Rechargeable Batteries

2.2 Air Quality Sensor Set Up

1. Remove the battery door on the base of the air quality sensor as shown in Figure 1.

Figure 1:

• 1. Solar panel
• 2. Battery Compartment Cover
• 3. Red LED Indicator (RF transmission)
• 4. Blue LED Indicator (charging status)
• 5. USB Port
• 6. Battery Compartment

2. Insert two AA battery.

3. After inserting the battery, the remote sensor LED indicator will light for 4 seconds, and then flash once per 10 minutes thereafter. Each time it flashes, the sensor is transmitting data.

4. Connect the USB cable to a standard USB power adapter and charge battery until blue LED is turned off, indicating batteries are fully charged.

5. When no sufficient solar radiation is possible, a fully charged set battery can last for about 20 days (about 500 hours), and battery status monitor on display will reflect the battery power status. When battery is empty, please charge sensor again.

6. After the batteries are fully charged, remove the USB cable and close the battery door.

2.3 Display Console Set Up

1. Move the remote about 2 to 3m away from the display console (if the sensor is too close, it may not be received by the display console).

2. Remove the battery door on the back of the display, as shown in Figure 2. Insert one AA (alkaline, lithium or rechargeable) battery in the back of the display console.

Figure 2:

• 1. Integrated Hanging Hole
• 2. Tabletop Stand
• 3. °C/°F Button
• 4. MAX Button
• 5. Battery Compartment
• 6. Battery Compartment Cover

All of the LCD segments will light up for a few seconds to verify all segments are operating properly.

Full Display:

3. Replace the battery door, and fold out the desk stand and place the console in the upright position.

The console will instantly display indoor temperature and humidity. The PM 2.5 value will update on the display within a few minutes.

While in the search mode, the reception search icon [signal bars] will flash. If the remote does not update, please contact Customer Service for support.

2.3.1 Display Console Layout

Figure 3:

• 1. Current PM2.5 Concentration
• 2. Air Quality Level
• 3. Current AQI
• 4. Indoor Temperature
• 5. Indoor Humidity
• 6. 1h Max AQI
• 7. 1h Max PM2.5 Concentration
• 8. Outdoor Reception Icon

3. Wireless Sensor Installation

Outdoor Installation

Use four screws to fix the base of the outdoor sensor on a flat surface.

4. Console Operation

Note: The console has two buttons for easy operation: [°C/°F] button (on the left), and [MAX] button (on the right).

4.1 °C/°F

Short press [°C/°F] button: switch between display of temperature unit: °C/°F.

Press and hold the [°C/°F] button for 2 seconds: switch between display of the 24H average value of the PM2.5 concentration and AQI.

4.2 MAX

Short press the [MAX] button: switch between display of the 1h MAX / 24h MAX / MAX (since last reset) value of the PM2.5 concentration and AQI.

Press and hold the [MAX] button for 2s to clear all the 1h MAX / 24h MAX / MAX (since last reset) value.

5. Sensor Resynchronization

When the remote sensor lost reception, holding the °C/°F and MAX button for 5s, will register new outdoor for 12 minutes.

While in the search mode, the reception search icon [signal bars] will flash.

You can also re-sync the two units by removing all the batteries and then wait for several minutes. Then install the batteries again to register faster.

6. Best Practices for Wireless Communication

Note: To insure proper communication, place the remote sensor on a flat surface. Do not lean or place it upside down to avoid any damage.

Keep the console several feet away from computer monitors and TVs.

7. Function

1. Indoor temperature and humidity.
2. Every 60 seconds the unit will measure indoor temperature and humidity.
3. Display current / 24H average PM 2.5 concentration and AQI.
4. Display 1h MAX / 24h MAX / MAX (since last reset) PM 2.5 concentration and AQI.
5. Air quality level indicator color bar based on AQI.
6. IPx4 rainproof sensor, can be used both indoor and outdoor.
7. The wireless signal strength displays reception quality. If no signal is lost, the signal strength indicator will display 5 bars. If the signal is lost once, four bars will be displayed.

Signal Strength Indicator:

Lost the signal once [signal bars with one missing] <-----> Received the signal once [full signal bars]

8. Appendix

About the Air Quality Levels

9. Specifications

9.1 Wireless Specifications

• Line of sight wireless transmission (in open air): 300feet (100 meters)
• Frequency: 433/915/868 MHz (optional)
• Update Rate: 10 minutes

9.2 Measurement Specifications

The following table provides specifications for the measured parameters.

9.3 Power Consumption

• Base station (display console): 1 x AA Alkaline or Lithium batteries (not included)
• Remote sensor: 2 x AA 1.2V LSD type Ni-MH batteries (included)
• Solar panel for backup power

Note:

1. Battery type for charging: 2 x AA 1.2V Ni-MH batteries (battery life: 3 weeks)
2. It's recommended to recharge the outdoor sensor every two weeks.
3. Charge time: 3h (The blue LED indicator will light when in charge and be off when fully charged)
4. Charge Method: USB charge (USB Cable included)

10. Warranty Information

Ecowitt disclaims any responsibility for any technical error or printing error, or their consequences. All trademarks and patents are recognized.

Ecowitt provides a 1-year limited warranty on this product against manufacturing defects in materials and workmanship.

This limited warranty begins on the original date of purchase, is valid only on products purchased and only to the original purchaser of this product. To receive warranty service, the purchaser must contact Ecowitt for problem determination and service procedures.

This warranty covers only actual defects within the product itself, and does not cover the cost of installation or removal from a fixed installation, normal set-up or adjustments, claims based on misrepresentation by the seller or performance variations resulting from installation-related circumstances.