Ambient Weather WS-26 User manual

Version 1.1 ©Copyright 2019, Ambient LLC. All Rights Reserved. Page 1
Ambient Weather WS-26 Indoor Thermo-Hygrometer with
Daily Min/Max Display User Manual
Table of Contents
1Introduction.....................................................................................................................................2
2Getting Started ................................................................................................................................2
Parts List .............................................................................................................................................2
3Display Console Layout..................................................................................................................3
4Display Features..............................................................................................................................3
4.1 Comfort Icon.................................................................................................................................3
5Console Operation...........................................................................................................................3
5.1 Set Mode.......................................................................................................................................3
5.2 Day Month/Year/Alarm Display...................................................................................................4
5.3 Time Alarm ...................................................................................................................................4
5.4 Reset Max/Min..............................................................................................................................4
5.5 Adjustment or Calibration.............................................................................................................4
5.5.1 Humidity Calibration .........................................................................................................5
5.5.2 Temperature Calibration......................................................................................................5
6Glossary of Terms...........................................................................................................................6
7Specifications..................................................................................................................................6
7.1 Measurement Specifications.........................................................................................................6
7.2 Power Consumption......................................................................................................................6
8Troubleshooting Guide....................................................................................................................6
9Accessories .....................................................................................................................................7
10 Liability Disclaimer....................................................................................................................7
11 FCC Statement............................................................................................................................7
12 Warranty Information .................................................................................................................8

Version 1.1 ©Copyright 2019, Ambient LLC. All Rights Reserved. Page 2
1Introduction
Thank you for your purchase of the Ambient Weather WS-26 Indoor Thermo-Hygrometer with Daily
Min/Max Display. 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:
https://ambientweather.net/product/ws-26
2Getting Started
The WS-26 weather station consists of a display console.
Parts List
QTY
Item
1
Display Console
Frame Dimensions (LxHxW): 4.50 x 5.0 x 1.00 in
LCD Dimensions (LxW): 3.75 x 3.50”
LCD Segment Height: 1.25 inches
1
User Manual
1. 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. All of
the LCD segments will light up for a few seconds to verify all segments are operating
properly.
Figure 1
2. Replace the battery door, and fold out the desk stand and place the console in the upright
position.
The console will instantly display time, indoor temperature and humidity as designated by
the icon.

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3Display Console Layout
Figure 2
4Display Features
4.1 Comfort Icon
The comfort icon is based on humidity ranges specified in Figure 3. The icon is displayed for indoor
humidity.
RH<45%
RH 45%~65%
RH >65%
Dry
Comfortable
Wet
Figure 3
5Console Operation
Note: The console has three buttons for easy operation: CLEAR/- button, SET/ADJUST button,
and [+] button.
5.1 Set Mode
The Set Mode allows you to set the date and time format, date and time, time alarm, units of measure
and Min/Max clear.
To enter the set mode, press and hold the SET key for 3 seconds
1. 12 hr/24 hr time format. Press the [+] key to switch between 12 and 24 hour format. Press
the SET key to advance to the next setting.

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2. Hour. Press the [+] or [-] key to increase or decrease the hour. Press the SET key to
advance to the next setting.
3. Minute. Press the [+] or [-] key to increase or decrease the minute. Press the SET key to
advance to the next setting.
4. Month-Day/Day-Month format. Press the [+] key to switch between mm-dd and dd-mm
date format. Press the SET key to advance to the next setting.
5. Month. Press the [+] or [-] key to increase or decrease the month. Press the SET key to
advance to the next setting.
6. Day. Press the [+] or [-] key to increase or decrease the day. Press the SET key to advance
to the next setting.
7. Year. Press the [+] or [-] key to increase or decrease the year. Press the SET key to advance
to the next setting.
8. Alarm Hour. Press the [+] or [-] key to increase or decrease the alarm hour. Press the SET
key to advance to the next setting.
9. Alarm Minute. Press the [+] or [-] key to increase or decrease the alarm minute. Press the
SET key to advance to the next setting.
10. Temperature Units of Measure. Press the [+] or [-] key to switch between °F and °C units of
measure. Press the SET key to advance to the next setting.
11. Max/Min Clearing. The Max/Min can be programmed to clear daily (at midnight) or
manually. Press the [+] or [-] key to switch between “Clears Daily” and Clears Manually.
Press the SET key to exit setting.
5.2 Day Month/Year/Alarm Display
Press the SET key (do not hold) to toggle between the Day/Month, Year and Alarm Time.
5.3 Time Alarm
To turn on and off the Time Alarm, press the CLEAR/- button and the alarm icon will appear
when set, and disappear when disabled.
5.4 Reset Max/Min
To reset the Max/Min values, press and hold the CLEAR/- button for 3 seconds.
5.5 Adjustment or Calibration
Note: The calibrated value can only be adjusted on the console.
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.

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5.5.1 Humidity Calibration
To enter the humidity calibration mode, press and hold the SET/ADJUST and CLEAR/- buttons at
the same time for 5 seconds and the humidity value will begin flashing. Press the [+] button to
increase the humidity and the CLEAR/- button to decrease the humidity reading in 1% increments. To
rapidly increase (or decrease) the humidity reading, press and hold the [+] or CLEAR/- button.
To return the humidity to the actual or uncalibrated measurement, press the ADJUST button.
Once the displayed humidity equals the calibrated source, press and hold the ADJUST button for
three seconds, or wait 15 seconds for timeout, and the humidity value will stop flashing.
Discussion: Humidity is a difficult parameter to measure electronically and drifts over time due to
contamination.
Due to manufacturing tolerances, the humidity is accurate to ± 5%. To improve this accuracy, the
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 9). You can also use common table salt,
water and a plastic bag:
https://ambientweather.net/help/how-can-i-test-the-accuracy-of-my-hygrometer/
5.5.2 Temperature Calibration
To enter the temperature calibration mode, press and hold the SET/ADJUST and [+] buttons at the
same time for 5 seconds and the temperature value will begin flashing. Press the [+] button to increase
the temperature and the CLEAR/- button to decrease the temperature reading in 0.1° increments. To
rapidly increase (or decrease) the temperature reading, press and hold the [+] or CLEAR/- button.
To return the temperature to the actual or uncalibrated measurement, press the ADJUST button.
Once the displayed temperature equals the calibrated source, press and hold the ADJUST button for
three seconds, or wait 15 seconds for timeout, and the temperature value will stop flashing.
Discussion:Temperature errors can occur when a sensor is placed too close to a heat source (such
as a computer or TV or in a window).
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.

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6Glossary of Terms
Term
Definition
Accuracy
Accuracy is defined as the ability of a measurement to match the actual
value of the quantity being measured.
Hygrometer
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
Range is defined as the amount or extent a value can be measured.
7Specifications
7.1 Measurement Specifications
The following table provides specifications for the measured parameters.
Measurement
Range
Accuracy
Resolution
Indoor Temperature
32 to 140 °F
± 1 °F
0.1 °F
Indoor Humidity
10 to 99 %
± 5% (only guaranteed
between 20 to 90%)
1 %
7.2 Power Consumption
Base station (display console) : 4 xAAA 1.5V Alkaline or Lithium batteries (not included)
Battery life: Minimum 12 months with high quality batteries. Rechargeable batteries are
fine, but may not last as long.
8Troubleshooting 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)
Problem
Solution
Temperature seems inaccurate
Allow up to one hour for the console to stabilize after
installing batteries.
Use the calibration feature to match the temperature to a
known source.
Humidity seems inaccurate
Allow up to one hour for the console to stabilize after
installing batteries.
Use the calibration feature to match the temperature to a
known source.
Display console contrast is weak
Replace console batteries with a fresh set of batteries.

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9Accessories
The following software and hardware accessories are available for this weather station at
www.AmbientWeather.com .
Accessory
Description
Ambient Weather Humidity
Calibration Kits
One step calibration kits for digital hygrometers use salt slurry formula
to accurately calibrate the hygrometer.
10 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.
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.
11 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 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

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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.
12 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 toAmbient, 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 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.