ECOWITT WH31 User manual

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Wireless Multi-channel
Thermometer and Hygrometer
Sensor
Model: WH31
Contents
1. Introduction................................................ 2
2. Get Started.................................................2
2.1 Parts List.......................................... 2
3. Overview.................................................... 3
4. Setup Guide...............................................5
4.1 Install batteries................................5
5. Sensor Placement.................................... 8
6. Setup Guide (using with Wi-Fi gateway)10
6.1 Pair with Gateway........................ 10
6.2 Wi-Fi Connection for the Gateway11
7. View Online Data on WS View............. 11
8. Specification............................................ 13
9.Warranty Information...............................14

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1. Introduction
Thanks for purchasing this WH31 wireless
thermometer and hygrometer sensor. This
device measures temperature and
humidity and supports up to 8
channels(one unit for one channel,
optional sensors sold separately). The
data can be streamed by GW1000 Wi-Fi
Gateway(sold separately) and can be
viewed on our WS View mobile application
after the Wi-Fi configuration done.
To ensure the best product performance,
please read this manual and retain it for
future reference.
2. Get Started
2.1 Parts List
One Multi-channel Temperature and

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Humidity sensor
One User Manual
3. Overview
Figure 1: Multi-channel Thermo-Hygro
Sensor

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Figure 2: Sensor LCD display
(1) temperature
(2) temperature units (°F vs. °C)
(3) channel number
(4) relative humidity

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4. Setup Guide
4.1 Install batteries
1.Remove the battery door on the back of
the transmitter(s) by sliding down the
battery door, as shown in Figure 3 .
Figure 3: Battery installation

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2. Before inserting the batteries, find the
dip switches above the battery
compartment and set the temperature
units and channel number:
Temperature Units: To change the
transmitter display units of temperature
measure (°F vs. °C), change Dip Switch 4,
as referenced in Figure 3.
Channel Number: This device supports
up to eight sensors. To set each channel
number, change Dip Switches 1, 2 and 3,
as referenced in Figure 4.
Switch in down position. Switch in
up position.

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Figure 4: Dip Switch diagram
3.Insert two AA batteries.
4.Verify the correct channel number (CH)
and temperature units of measure (°F
vs. °C) are on the display.
5.Close the battery door.
Repeat for the additional remote
transmitters(sold separately), verifying
each remote is on a different channel.

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5. Sensor Placement
The best mounting location for the indoor
sensor is in a location that never receives
direct sunlight, not even through windows.
Also, do not install in a location where a
nearby radiant heat source (radiator,
heaters, etc.) will affect it. Direct sunlight
and radiant heat sources will result in
inaccurate temperature readings.
The unit is weatherproof, but besides
heeding the placement instructions above,
you should also attempt to mount the unit
under cover (eve or awning or similar).
To mount or hang the unit on a wall or
wood beam:
Use a screw or nail to affix the remote
sensor to the wall, as shown on the left
side of figure 5, or

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Hang the remote sensor using a string,
as shown in right side of figure 5.
Figure 5: Indoor sensor mounting
Note: Make sure the sensor is mounted
vertically and not lying down on a flat
surface. This will insure optimum reception.
Wireless signals are impacted by distance,
interference (other weather stations,
wireless phones, wireless routers, TVs and
computer monitors), and transmission

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barriers, such as walls. In general,
wireless signals will not penetrate solid
metal and earth (down a hill, for example).
6. Setup Guide (using with Wi-Fi
gateway)
If you want to view the multi channel
sensor data on your mobile application,
you need to pair this device with our
GW1000 Wi-Fi Gateway(sold separately).
6.1 Pair with Gateway
If the GW1000 has been in operation, and
you have never had any WH31
multi-channel temperature and humidity
sensor(s) setup before, just power up the
sensor(s) and GW1000 will pick
multi-channel temperature and humidity
data automatically.

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If a WH31 sensor has been hooked on
GW1000 before, and you have a new
WH31 sensor to replace the old one,
unplug GW1000 from USB socket and
power up again, then the new sensor will
be learned and old sensor will be erased.
6.2 Wi-Fi Connection for the Gateway
For this part, please refer to the manual of
the GW1000 Wi-Fi gateway.
Any question, please contact the customer
service.
7. View Online Data on WS View
When the Wi-Fi configuration is done, you
can view the local data of your multi
temperature and humidity sensor(s) on the
WS View application.

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8. Specification
Power: 2 AA batteries(not included)
Sensor Size: 123x42x14mm
Frequency: 915/868/433Mhz(optional)
Temperature range: -10°C – 60°C (14°F -
140°F)
Temperature resolution: 0.1°C, or 0.1°F
Temperature accuracy: ± 1°C
Humidity range: 10% ~ 99%
Humidity resolution: 1%
Humidity accuracy: ± 5%
Sensor reporting interval: 48 seconds
Note: A low battery icon will display on the
APP to indicate the battery status of the
sensor(s).

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9.Warranty Information
We disclaim any responsibility for any
technical error or printing error, or the
consequences thereof.
All trademarks and patents are
recognized.
We provide a 1-year limited warranty on
this product against manufacturing defects,
or 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.

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This limited 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, or claims based on
misrepresentation by the seller, or
performance variations resulting from
installation-related circumstances.