Ambient Weather WS23C User manual

Ambient Weather WS-23-C Wireless Indoor/Outdoor
8-Channel Thermo-Hygrometer with Backlit Display
(Console Only) User Manual
Version 1.0 ©Copyright 2015, Ambient LLC. All Rights Reserved. Page 1
Table of Contents
1.Introduction ....................................................................................................................
2.Getting Started ......................................................................................................3
2.1 Parts List .......................................................................................................3
2.2 Display Console Set Up ................................................................................3
2.2.1 Display Console Layout .........................................................................5
2.2.2 Sensor Operation Verification ................................................................5
3.Remote Sensor Installation ...................................................................................6
4.Console Operation ................................................................................................6
4.1 Min/Max Mode ........................................................................................6
4.2 Clearing Min/Max Daily ...................................................................................... 7
4.3 Outdoor Channel Selection and Scroll Mode .......................................................7
4.4 Temperature Units of Measure ..................................................................7
4.5 Sensor Search Mode and Resyncing the Sensors ..................................7
4.6 Best Practices for Wireless Communication................................................ 8
4.7 Backlight Operation ..................................................................................9
4.7.1 Backlight Operation, Battery Power..................................................9
4.7.2 Backlight Operation, AC Power(optional)......................................9
4.8 Adjustment or Calibration ..............................................................................9
4.8.1 Indoor Temperature and Humidity Calibration.........................................10
4.8.2 Outdoor Temperature and Humidity Calibration.....................................11
5.Glossary of Terms ...............................................................................................12
6.Specifications ......................................................................................................13
6.1 Wireless Specifications ...............................................................................13
6.2 Measurement Specifications .......................................................................13
6.3 Power Consumption.....................................................................................13
7.Troubleshooting Guide ........................................................................................13
8.Accessories .........................................................................................................15
9.Liability Disclaimer ............................................................................................16
10.FCC Statement ..................................................................................................17
11.Warranty Information ........................................................................................18
2
WS23C

1. Introduction
Thank you for your purchase of the Ambient Weather WS23C Wireless
Indoor/Outdoor 8-Channel Thermo-Hygrometer with Backlit Display
(Console Only). The following user guide provides step by step
instructions for installation, operation and troubleshooting. To download
the latest manual and additional troubleshooting tips, please visit:
http://ambientweather.wikispaces.com/ws23
The WS23C includes an indoor temperature and humidity sensor (there
is a sensor inside the display) as well as supports up to 8 remote sensors
(sensors and receivers are sold separately):
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Item Number Image Description
F007TH
F007T
F007TP
F007PF
8-channel sensor measures temperature
and humidity. Applications include indoor
and outdoor air temperature and
humidity measurement.
8-channel sensor measures
temperature. Applications include
indoor and outdoor air temperature
measurement.
8-channel sensor measures probe
temperature. Applications include
refrigerators and freezers (where the
probe is placed inside the appliance(s)
and the display is outside), water
temperature, soil temperature and
ground temperature.
8-channel pool float thermometer.
Applications include pools, spas, and
lakes.

2. Getting Started
The WS23C (console only) works perfectly fine as a standalone unit (no
sensors required) if you simply want to monitor indoor temperature and
humidity. The WS23C is also sold without any remote sensors so that
you can add additional consoles to your system.
Some of this manual is devoted to wireless communication to one or
remote sensors. You can ignore this information if you purchased the
console as a stand-alone system.
Note: If you own a remote sensor, the power up sequence must
be performed in the order shown in this section (insert batteries in the
remote transmitter(s) first, Display Console second).
2.1 Parts List
2.2 Display Console Set Up
1. Move the remote thermo-hygrometer(s) about 5 to 10’ away from
the display console (if the sensor is too close, it may not be received by
the display console). If you have more than one thermo-hygrometer,
make sure they are all powered up and transmitting on different channels.
2. Remove the battery door on the back of the display, as shown in
Figure 1. Insert four AAA (alkaline or lithium, avoid rechargeable)
batteries in the back of the display console.
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QTY Item
Display Console
Frame Dimensions (LxHxW): 6 x 3.25 x 1 in
LCD Dimensions (LxW): 4.5 x 2.5”
LCD Segment Height: 1 inch
1
User Manual
1
WS23C
Add as many display consoles as you
like to your existing system. For
example, you can have one remote
sensor display temperature and place a
display console in every room.

Figure 1
All of the LCD segments will light up for a few seconds to verify all
segments are operating properly.
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
remote temperature and humidity will update on the display within a few
minutes on the appropriate channel.
While in the search mode, the remote search icon will be constantly
displayed next to the channel number.
If you have more than one remote sensor (up to eight remotes are
supported), the display will automatically toggle between sensors until all
sensors have reported in.
Do not touch any buttons until the remote sensor has reported in, or the
radio search icon is no longer on, otherwise the remote sensor search
mode will be terminated. When the remote sensor temperature and
humidity has been received, the console will automatically switch to the
normal mode, and all further settings can be performed.
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If the remote does not update, please reference the troubleshooting guide
in Section 7.
2.2.1 Display Console Layout
Note: The following illustration shows the full segments of the LCD for
description purposes only and will not appear like this during normal
operation.
Figure 2
1. Channel 1,2,3,4,5,6,7,8, indictor 6. Indoor Relative Humidity (%)
2. Scroll mode (CH 1-8) 7. Indoor Temperature
3. Transmitter low battery indicator 8. Outdoor Relative Humidity (%)
4. Min/Max Record mode 9. Outdoor Temperature
5. Min/Max reset for 24h 10. Temperature units (°F or °C)
2.2.2 Sensor Operation Verification
Verify the indoor and outdoor humidity match closely with the console and
sensor array in the same location (about 5 to 10’ apart). The sensors
should be within 10% (the accuracy is ± 5%). Allow about 30 minutes for
both sensors to stabilize. The humidity can be adjusted or calibrated later
to match each other a known source.
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2
1
3
5
6
8
9
10
4
6
7

Verify the indoor and outdoor temperature match closely with the console
and sensor array in the same location (about 5 to 10’ apart). The sensors
should be within 2°F (the accuracy is ± 1°F). Allow about 30 minutes for
both sensors to stabilize. The temperature can be adjusted or calibrated
later to match each other or a known source.
3. Remote Sensor Installation
If you purchased the outdoor sensor for this console (optional):
It is recommended you mount the remote sensor on a north facing wall, in
a shaded area. Direct sunlight and radiant heat sources will result in
inaccurate temperature readings. Although the sensor is water resistant,
it is best to mount in a well protected area, such as under an eve. Use a
screw or nail (not included) to affix the remote sensor to the wall, as
shown in Figure 3.
Figure 3
4. Console Operation
Note: The console has four buttons for easy operation: MIN/MAX/-
button, CLEAR/ADJUST button, CHANNEL/+ button and LIGHT button.
4.1 Min/Max Mode
The Min/Max mode displays the minimum and maximum temperature and
humidity (since reset of the unit) for the indoor, remote channel 1 through
8 sensors.
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Prior to entering the MIN/MAX mode, press the CHANNEL/+ button to
select the temperature and humidity values you wish to view.
1. Display Maximum. Press the MIN/MAX button once to display
the maximum. The MAX icon will be displayed.
2. Clear Maximum. To reset the maximum values to the current
values, press and hold the CLEAR button for 3 seconds.
3. Display Minimum. Press the MIN/MAX button again to display
the minimum. The MIN icon will be displayed.
4. Clear Minimum. To reset the minimum values to the current
values, press and hold the CLEAR button for 3 seconds.
To return to normal mode, press the MIN/MAX button again.
4.2 Clearing Min/Max Daily
The minimum and maximum can be set to clear every 24 hours
automatically. Press and hold the CLEAR/ADJUST button for 3 seconds
to switch between Clears 24h and Clears Manually.
When you manually clear the minimum and maximum, the Clears 24h
function will clear every 24 hours from the time you clear it.
For example, if you clear the min and max at 4:00pm, it will continue to
clear every day at 4:00pm.
4.3 Outdoor Channel Selection and Scroll Mode
Press the CHANNEL/+ button to switch the display between remote
sensors 1 through 8, and scroll mode . In scroll mode, all of the remote
sensors will be displayed in five second intervals.
4.4 Temperature Units of Measure
The default temperature units of measure are degrees Fahrenheit. To
toggle between degrees Celsius and degrees Fahrenheit, press and hold
the MIN/MAX button for 3 seconds.
4.5 Sensor Search Mode and Resyncing the Sensors
If any of the sensor communication is lost, dashes (--.-) will be displayed
on the screen. To reacquire the signal:
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1.If a specific channel is lost, press the CHANNEL/+ button to display
this channel, then Press and hold the CHANNEL/+ button for 3 seconds,
and the remote search icon will be constantly displayed for up to 10
minutes. Once the signal is reacquired, the remote search icon will
turn off, and the current values will be displayed.
2.If new sensors are added, subtracted, or multiple sensor channels
are lost, Press and hold the CHANNEL/+ button for 5 seconds, and the
remote search icon will be constantly displayed for up to 10 minutes.
Once the signal is reacquired, the remote search icon will turn off,
and the current values will be displayed.
4.6 Best Practices for Wireless Communication
Note: To insure proper communication, mount the remote sensor on
a vertical surface, such as a wall. Do not lay the sensor flat.
Wireless communication is susceptible to interference, distance, walls
and metal barriers. We recommend the following best practices for
trouble free wireless communication.
1. Electro-Magnetic Interference (EMI). Keep the console several
feet away from computer monitors and TVs.
2. Radio Frequency Interference (RFI). If you have other 433 MHz
devices and communication is intermittent, try turning off these other
devices for troubleshooting purposes. You may need to relocate the
transmitters or receivers to avoid intermittent communication.
3. Line of Sight Rating. This device is rated at 300 feet line of sight
(no interference, barriers or walls) but typically you will get 100 feet
maximum under most real-world installations, which include passing
through barriers or walls.
4. Metal Barriers. Radio frequency will not pass through metal
barriers such as aluminum siding. If you have metal siding, align the
remote and console through a window to get a clear line of sight.
The following is a table of reception loss vs. the transmission medium.
Each “wall” or obstruction decreases the transmission range by the factor
shown below.
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4.7 Backlight Operation
The backlight operation is different when operating on batteries to save
power.
4.7.1 Backlight Operation, Battery Power
To temporarily turn on the back light for five seconds, press the LIGHT
button on the top of the console.
To turn on the backlight for 30 minutes, press and hold the LIGHT button
on the top of the console for two seconds.
To turn off the backlight at any time, press and hold the LIGHT button for
two seconds.
4.7.2 Backlight Operation, AC Power (optional)
The AC power plug is optional.
To temporarily turn on the back light for five seconds, press the LIGHT
button on the top of the console.
To turn on the backlight permanently, press and hold the LIGHT button on
the top of the console for two seconds.
To turn off the backlight at any time, press and hold the LIGHT button for
two seconds.
Note: When AC power plug in, the backlight will turn on permanently.
4.8 Adjustment or Calibration
Note: The calibrated value can only be adjusted on the console. The
remote sensor(s) always displays the un-calibrated or measured value.
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Medium
RF Signal Strength Reduction
Glass (untreated)
Plastics
Wood
5-15%
10-15%
10-40%
Brick
Concrete
Metal
10-40%
40-80%
90-100%

Note: The measured humidity range is between 10 and 99%.
Humidity cannot be accurately measured outside of this range. Thus, the
humidity cannot be calibrated below 10% or above 99%.
The purpose of calibration is to fine tune or correct for any sensor error
associated with the devices margin of error. The measurement can be
adjusted from the console to calibrate to a known source.
Calibration is only useful if you have a known calibrated source you can
compare it against, and is optional. This section discusses practices,
procedures and sources for sensor calibration to reduce manufacturing
and degradation errors. Do not compare your readings obtained from
sources such as the internet, radio, television or newspapers. They are in
a different location and typically update once per hour.
The purpose of your weather station is to measure conditions of your
surroundings, which vary significantly from location to location.
4.8.1 Indoor Temperature and Humidity Calibration
Press and hold the ADJUST and MIN/MAX buttons at the same time for 3
seconds and the indoor temperature value will begin flashing. Press the
CHANNEL/+ button to increase the temperature and the MIN/MAX/-
button to decrease the temperature reading in 0.1° increments. To rapidly
increase (or decrease) the temperature reading, press and hold the
CHANNEL/+ or MIN/MAX/- button.
To return the temperature to the actual or uncalibrated measurement,
press the ADJUST button.
Press and hold the ADJUST and MIN/MAX buttons at the same time for 3
seconds again, and the indoor humidity value will begin flashing. Press
the CHANNEL/+ button to increase the humidity and the MIN/MAX/-
button to decrease the humidity reading in 1% increments. To rapidly
increase (or decrease) the humidity reading, press and hold the
CHANNEL/+ or MIN/MAX/- button.
To return the humidity to the actual or uncalibrated measurement,
press the ADJUST button.
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Once the displayed temperature or humidity equals the calibrated source,
press and hold the ADJUST button for three seconds, or wait 15 seconds
for timeout, and the indoor temperature or humidity value will stop
flashing.
4.8.2 Outdoor Temperature and Humidity Calibration
Prior to entering the calibration mode, press the CHANNEL/+ button to
select the outdoor temperature and humidity you wish to adjust.
Press and hold the ADJUST and CHANNEL/+ buttons at the same time
for 3 seconds and the outdoor temperature value will begin flashing. Press
the CHANNEL/+ button to increase the temperature and the MIN/MAX/-
button to decrease the temperature reading in 0.1° increments. To rapidly
increase (or decrease) the temperature reading, press and hold the
CHANNEL/+ or MIN/MAX/- button.
To return the temperature to the actual or uncalibrated measurement,
press the ADJUST button.
Press and hold the ADJUST and CHANNEL/+ buttons at the same time
for 3 seconds again, and the outdoor humidity value will begin flashing.
Press the CHANNEL/+ button to increase the humidity and the MIN/MAX/-
button to decrease the humidity reading in 1% increments. To rapidly
increase (or decrease) the humidity reading, press and hold the
CHANNEL/+ or MIN/MAX/- button.
To return the humidity to the actual or uncalibrated measurement, press
the ADJUST button.
Once the displayed temperature or humidity equals the calibrated source,
press and hold the ADJUST button for three seconds, or wait 15 seconds
for timeout, and the outdoor temperature or humidity value will stop
flashing.
Discussion: Humidity is a difficult parameter to measure
electronically and drifts over time due to contamination. In addition,
location has an adverse affect on humidity readings (installation over dirt
vs. lawn for example).
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Official stations recalibrate or replace humidity sensors on a yearly basis.
Due to manufacturing tolerances, the humidity is accurate to ± 5%. To
improve this accuracy, the indoor and outdoor humidity can be calibrated
using an accurate source, such as a sling psychrometer:
http://www.ambientweather.com/mafaredspslp.html
or one step humidpak calibration kits (reference Section 8). You can also
use common table salt, water and a plastic bag:
http://ambientweather.wikispaces.com/ws23
Discussion: Temperature errors can occur when a sensor is placed
too close to a heat source (such as a building structure, the ground or
trees).
To calibrate temperature, we recommend a mercury or red spirit (fluid)
thermometer. Bi-metal (dial) and other digital thermometers are not a good
source and have their own margin of error. Using a local weather station in
your area is also a poor source due to changes in location, timing (airport
weather stations are only updated once per hour) and possible calibration
errors (many official weather stations are not properly installed and
calibrated).
Place the sensor in a shaded, controlled environment next to the fluid
thermometer, and allow the sensor to stabilize for 48 hours. Compare this
temperature to the fluid thermometer and adjust the console to match the
fluid thermometer.
5. Glossary of Term
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Term Definition
Accuracy
Hygrometer
Range
Accuracy is defined as the ability of a measurement to
match the actual value of the quantity being measured.
A hygrometer is a device that measures relative
humidity. Relative humidity is a term used to describe
the amount or percentage of water vapor that exists in air.
Range is defined as the amount or extent a value can be
measured.

6. Specifications
6.1 Wireless Specifications
●
feet under most conditions.
● Frequency: 433 MHZUHFHLYHRQO\
● Update Rate: 60 seconds
6.2 Measurement Specifications
The following table provides specifications for the measured parameters.
6.3 Power Consumption
● Base station (display console) : 4 x AAA 1.5V Alkaline or Lithium
batteries (not included)
● Battery life: Minimum 12 months for base station with one sensor
and excellent reception. Intermittent reception and multiple sensors may
reduce the battery life.
7. Troubleshooting Guide
If your question is not answered here, you can contact us as follows:
1.Email Support: [e-mail]
2.Technical Support: 480-346-3380 (M-F 8am to 3pm Arizona Time)
Line of sight wireless transmission (in open air): 300 feet, 100
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Measurement Range Accuracy Resolution
Indoor Temperature
Indoor Humidity
32 to 140 °F
10 to 99 %
± 1 °F
± 5% (only guaranteed
between 20 to 90%)
0.1 °F
1 %

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Problem Solution
Wireless remote
(thermo-hygrometer)
not reporting in to
console.
There are dashes
(--.-) on the display
console.
If any of the sensor communication is lost,
dashes (--.-) will be displayed on the screen. To
reacquire the signal, press and hold the
CHANNEL/+ button for 3 seconds, and the
remote search icon will be constantly
displayed. Once the signal is reacquired, the
remote search icon will turn off, and the
current values will be displayed.
The maximum line of sight communication range
is 300’ and 100’ under most conditions. Move the
sensor assembly closer to the display console.
If the sensor assembly is too close (less than 5’),
move the sensor assembly away from the display
console.
Make sure the remote sensor LCD display is
working and the transmitter light is flashing once
per 60 seconds.
Install a fresh set of batteries in the remote
thermo-hygrometer. For cold weather
environments, install lithium batteries.
Make sure the remote sensors are not
transmitting through solid metal (acts as an RF
shield), or earth barrier (down a hill).
Move the display console around electrical noise
generating devices, such as computers, TVs and
other wireless transmitters or receivers.
Move the remote sensor to a higher location.
Move the remote sensor to a closer location.

8. Accessories
The following software and hardware accessories are available for this
weather station at www.AmbientWeather.com .
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Problem Solution
Temperature sensor
reads too high in the
day time.
Make sure the thermo-hygrometer is mounted in
a shaded area on the north facing wall. Consider
the following radiation shield if this is not
possible:
http://www.ambientweather.com/amwesrpatean.
html
Indoor and Outdoor
Temperature do not
agree
Allow up to one hour for the sensors to stabilize
due to signal filtering. The indoor and outdoor
temperature sensors should agree within 2 °F
(the sensor accuracy is ± 1 °F).
Use the calibration feature to match the indoor
and outdoor temperature to a known source.
Indoor and Outdoor
Humidity do not
agree
Allow up to one hour for the sensors to stabilize
due to signal filtering. The indoor and outdoor
humidity sensors should agree within 10 % (the
sensor accuracy is ± 5 %).
Use the calibration feature to match the indoor
and outdoor humidity to a known source.
Display console
contrast is weak
Replace console batteries with a fresh set of
batteries.

9. Liability Disclaimer
Please help in the preservation of the environment and return used
batteries to an authorized depot.
The electrical and electronic wastes contain hazardous substances.
Disposal of electronic waste in wild country and/or in unauthorized
grounds strongly damages the environment.
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Accessory Description
Add additional remote thermo-hygrometers.
Supports up to eight remote sensors.
Add as many display consoles as you like to your
existing system to display the remote sensor in
different locations.
AAA lithium batteries for cold weather climates.
Solar Radiation Shield improves temperature
accuracy for hot weather climates. Remove the
rain guard and install over thermo-hygrometer.
Ambient Weather
WS23C
WS23 Big Digit 8-
Channel Wireless
Thermo-Hygrometer,
Console Only
Ambient Weather
F007TH
Wireless Thermo-
Hygrometer for WS-
23 Weather Stations
Energizer AAA
Lithium Battery (2-
pack) - Batteries for
Long Life and Cold
Climates
Ambient Weather
SRS100LX
Temperature and
Humidity Solar
Radiation Shield
Ambient Weather
Humidity
Calibration Kits
One step calibration kits for digital hygrometers
use salt slurry formula to accurately calibrate
the indoor and outdoor hygrometers.

Reading the “User manual” is highly recommended. The manufacturer and
supplier cannot accept any responsibility for any incorrect readings and
any consequences that occur should an inaccurate reading take place.
This product is designed for use in the home only as indication of weather
conditions. This product is not to be used for medical purposes or for
public information.
The specifications of this product may change without prior notice.
This product is not a toy. Keep out of the reach of children.
No part of this manual may be reproduced without written authorization of
the manufacturer
Ambient, LLC WILL NOT ASSUME LIABILITY FOR INCIDENTAL,
CONSEQUENTIAL, PUNITIVE, OR OTHER SIMILAR DAMAGES
ASSOCIATED WITH THE OPERATION OR MALFUNCTION OF THIS
PRODUCT.
10. FCC Statement
Statement according to FCC part 15.19:
This device complies with part 15 of the FCC rules. Operation is subject to
the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including
interference that may cause undesired operation.
Statement according to FCC part 15.21:
Modifications not expressly approved by this company could void the
user's authority to operate the equipment.
Statement according to FCC part 15.105:
NOTE: This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules.These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment
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generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful
interference to radio communications.
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
11. Warranty Information
Ambient, LLC 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 Ambient, LLC for
problem determination and service procedures.
Warranty service can only be performed by a Ambient, LLC. The original
dated bill of sale must be presented upon request as proof of purchase to
Ambient, LLC.
Your Ambient, LLC warranty covers all defects in material and
workmanship with the following specified exceptions: (1) damage caused
by accident, unreasonable use or neglect (lack of reasonable and
necessary maintenance); (2) damage resulting from failure to follow
instructions contained in your owner’s manual; (3) damage resulting from
the performance of repairs or alterations by someone other than an
authorized Ambient, LLC authorized service center; (4) units used for
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other than home use (5) applications and uses that this product was not
intended (6) the products inability to receive a signal due to any source of
interference or metal obstructions and (7) extreme acts of nature, such as
lightning strikes or floods.
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.
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