ECOWITT WH0290 User manual

Wireless Air Quality Monitor with
Indoor Temperature and Humidity
Model: WH0290

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Contents
1. Introduction .......................................................... 2
2. Get Started ...........................................................2
2.1 Parts List ................................................... 3
2.2 Air Quality Sensor Set Up ....................... 3
2.3 Display Console Set Up .......................... 5
2.3.1 Display Console Layout ............... 8
3. Wireless Sensor Installation ............................. 9
4. Console Operation ............................................10
4.1 °C/°F ........................................................ 10
4.2 MAX ......................................................... 10
5. Sensor Resynchronization .............................. 11
6. Best Practices for Wireless Communication11
7. Function ..............................................................12
8. Appendix ............................................................ 13
9. Specifications .................................................... 14
9.1 Wireless Specifications ........................ 14
9.2 Measurement Specifications ............... 14
9.3 Power Consumption ..............................15
10. Warranty Information ..................................... 16

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1. Introduction
Thanks for your purchasing of 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
[e-mail] or
[e-mail] (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

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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
1One Air Quality Monitor (Receiver)
2One Air Quality Sensor(Wireless PM2.5
Sensor)
3One USB Cable
4One User Manual
5Two 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

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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

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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 500hours), 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.

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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.

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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 flash.
If the remote does not update, please contact
our Customer Service for support.

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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

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3. Wireless Sensor Installation
Outdoor Installation
Use four screws to fix the base of the outdoor
sensor on a flat surface.

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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.

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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 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 upside down it to avoid any damage.
Keep the console several feet away from
computer monitors and TVs.

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7. Function
1)Indoor temperature and humidity
2)Every 60 second 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.
Lost the signal once
Received the signal once

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8. Appendix
About the Air Quality Levels
AQI
Air Pollution
Level
PM2.5
Concentration
ug/m3
Health Implications
Cautionary Statement
(for PM2.5)
0 - 50
Good
0.0-12.0
Air quality is considered
satisfactory, and air
pollution poses little or
no risk
None
51 -100
Moderate
12.1-35.4
Air quality is
acceptable; however,
for some pollutants
there may be a
moderate health
concern for a very small
number of people who
are unusually sensitive
to air pollution.
Active children and
adults, and people with
respiratory disease,
such as asthma, should
limit prolonged outdoor
exertion.
101-150
Poor
35.5-55.4
Members of sensitive
groups may experience
health effects. The
general public is not
likely to be affected.
Active children and
adults, and people with
respiratory disease,
such as asthma, should
limit prolonged outdoor
exertion.
151-200
Unhealthy
55.5-150.4
Everyone may begin to
experience health
effects; members of
sensitive groups may
experience more
serious health effects
Active children and
adults, and people with
respiratory disease,
such as asthma, should
avoid prolonged outdoor
exertion; everyone else,
especially children,
should limit prolonged
outdoor exertion
201-300
Severe
150.5-250.4
Health warnings of
emergency conditions.
The entire population is
more likely to be
affected.
Active children and
adults, and people with
respiratory disease,
such as asthma, should
avoid all outdoor
exertion; everyone else,
especially children,
should limit outdoor
exertion.
300+
Hazardous
250.5+
Health alert: everyone
may experience more
serious health effects
Everyone should avoid
all outdoor exertion

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9. Specifications
9.1 Wireless Specifications
Line of sight wireless transmission (in
open air): 300feet(100meters)
Frequency: 433/915/868 MHz (optional)
Update Rate: 10 minutes
9.2 Measurement Specifications
The following table provides specifications for
the measured parameters.
Measurement
Range
Accuracy
Resolution
Indoor
temperature
14 to 140 °F
(-10 to 60°C)
± 1 °F
(±1°C)
0.1 °F
(±0.5°C)
Indoor
Humidity
10 to 99 %
Accuracy +/- 3% RH (@25°C. ,
30%RH to 80%RH)
Accuracy +/- 5% RH (@25°C. ,
1%RH to29%RH；80%RH to
99%RH)
1%
PM 2.5
0~999ug/m3
0~100ug/m3 ±10ug/m3
100~500ug/m3 ±10%
1ug/m3

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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 full
charged)
4.Charge Method: USB charge(USB Cable
included)

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10. Warranty Information
We disclaim any responsibility for any
technical error or printing error, or their
consequences.
All trademarks and patents are recognized.
We provide 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 us 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.