Ambient Weather WS-0802 User manual

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Ambient Weather WS-0802 8-Channel Wireless
Thermometer with Min/Max Display User Manual
Table of Contents
1Introduction.....................................................................................................................................1
2Getting Started ................................................................................................................................3
2.1 Parts List .......................................................................................................................................3
2.2 Thermometer Sensor Set Up.........................................................................................................3
3Remote Sensor Installation .............................................................................................................5
4Display Console Set Up..................................................................................................................6
4.1 Display Console Layout................................................................................................................7
4.2 Sensor Operation Verification.......................................................................................................7
5Display Features..............................................................................................................................8
5.1 Console Operation.........................................................................................................................8
5.1.1 Set Mode............................................................................................................................8
5.1.2 Viewing the High and Low Alarms....................................................................................8
5.1.3 Alarm Defaults...................................................................................................................8
5.1.4 Setting the Min and MaxAlarm.........................................................................................9
5.2 Backlight Operation......................................................................................................................9
5.3 Manually Reset Max/Min .............................................................................................................9
5.4 Channel Selection .........................................................................................................................9
5.5 Sensor Transmission...............................................................................................................9
5.5.1 Sensor Search Mode...............................................................................................................9
5.5.2 Best Practices for Wireless Communication ....................................................................10
5.6 Adjustment or Calibration...........................................................................................................10
5.6.1 Remote Sensor Temperature Calibration.............................................................................. 11
5.6.2 Indoor (Console) Temperature Calibration .......................................................................... 11
6. Glossary of Terms.........................................................................................................................12
7. Specifications................................................................................................................................12
7.1 Wireless Specifications...............................................................................................................12
7.2 Measurement Specifications.......................................................................................................12
7.3 Power Consumption....................................................................................................................12
8. Troubleshooting Guide..................................................................................................................13
9. Liability Disclaimer ......................................................................................................................14
10. FCC Statement..........................................................................................................................14
11. Warranty Information ...............................................................................................................15
1Introduction
Thank you for your purchase of the Ambient Weather WS-0802 Wireless 8-Channel Thermometer

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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 the FAQ website:
http://ambientweather.wikispaces.com/ws0802
The WS-0802 supports any combination of the following sensors and receivers (additional sensors and
receivers are sold separately):
Item Number
Image
Description
F007T
8-channel sensor measures temperature. Applications
include indoor and outdoor air temperature
measurement.
F007TP
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.
F007PF
8-channel pool float thermometer. Applications include
pools, spas, and lakes.
WS0802-C
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.

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2Getting Started
Note: 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).
The WS-0802 weather station consists of a display console (receiver), and a thermometer (remote
transmitter).
2.1 Parts List
QTY
Item
1
Thermometer transmitter (FT007T)
Dimensions (LxHxW): 4.5” x 2.0” x 0.75”
1
Display Console
Frame Dimensions (LxHxW): 4.77 x 2.95 x 0.6 in
LCD Dimensions (LxW): 3.00 x 1.17”
LCD Segment Height: 0.70 inches
1
User Manual
2.2 Thermometer Sensor Set Up
Note: Do not use rechargeable batteries. We recommend fresh alkaline batteries for temperature
ranges between -4 °F and 140 °F and fresh lithium batteries for temperature ranges between -40 °F
and 140 °F.
1. Remove the battery door on the back of the sensor by removing the set screw, as shown in
Figure 1 .
Figure 1
2. BEFORE inserting the batteries, locate the dip switches on the inside cover of the lid of the
transmitter.
Figure 2 displays all four switches in the OFF position (factory default setting).

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Figure 2
3. Channel Number: The sensor supports up to eight transmitters. To set each channel number
(the default is Channel 1), change Dip Switches 1, 2 and 3, as referenced in Table 1.
4. Temperature Units of Measure: To change the transmitter display units of measure (°F vs.
°C), change Dip Switch 4, as referenced in Table 1.
DIPSWITCH
FUNCTION
1
2
3
4
DOWN
DOWN
DOWN
---
Channel 1
DOWN
DOWN
UP
---
Channel 2
DOWN
UP
DOWN
---
Channel 3
DOWN
UP
UP
---
Channel 4
UP
DOWN
DOWN
---
Channel 5
UP
DOWN
UP
---
Channel 6
UP
UP
DOWN
---
Channel 7
UP
UP
UP
---
Channel 8
---
---
---
DOWN
°F
---
---
---
UP
°C
Table 1
5. Insert two AAA batteries.
6. After inserting the batteries, the remote sensor LED indicator will light for 4 seconds, and
then flash once per 60 seconds thereafter. Each time it flashes, the sensor is transmitting data.
7. Verify the correct channel number (CH) and temperature units of measure (°F vs. °C) are on
the display, as shown in Figure 3.

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Figure 3
(1) temperature
(2) temperature units (°F vs. °C)
(3) channel number
8. Close the battery door. Make sure the gasket (around the battery compartment) is properly
seated in its trace prior to closing the door. Tighten the set screw.
3Remote Sensor Installation
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 4.
Figure 4

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4Display Console Set Up
Move the remote sensor(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 remote sensor, make sure they are all powered up and transmitting on
different channels. Remove the battery door on the back of the display, as shown in Figure 5.
Figure 5
Remove the battery cover, and insert two AAA (alkaline or lithium, avoid rechargeable unless fully
charged and high quality) 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).
1. Replace the battery door, and place the console in the upright position with the desk stand
folded out.
The console will instantly display time and indoor temperature as designated. The remote
temperature 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.
If you have more than once remote sensor (up to eight remotes are supported), the display
will automatically toggle between sensors until all sensors have reported in.

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Do not touch any buttons until the remote sensor has reported in, or the radio search icon
is no longer constantly on, otherwise the remote sensor search mode will be terminated.
When the remote sensor temperature has been received, the console will automatically
switch to the normal mode, and all further settings can be performed.
If the remote does not update, please reference the troubleshooting guide in Section 8.
4.1 Display Console Layout
Figure 6
4.2 Sensor Operation Verification
Verify the indoor and outdoor temperature match closely 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.

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5Display Features
5.1 Console Operation
Note: The console has three buttons for easy operation: SET button, MIN/MAX/- button, and
CH/+ button.
5.1.1 Set Mode
The Set Mode allows you to set the time and time format, time alarm and units of measure.
To enter the set mode, press and hold the SET key for 3 seconds.
Command
Mode
Settings
[SET] + 3
seconds
12 hour / 24 hour format
Press the [+] key to switch between 12 and 24 hour
format.
[SET]
Hour
Press the [+] or [-] key to increase or decrease the
hour.
[SET]
Minute
Press the [+] or [-] key to increase or decrease the
minute. Press the SET key to advance to the next
setting.
[SET]
Alarm Hour
Press the [+] or [-] key to increase or decrease the
alarm hour. While the alarm value is flashing, press
and hold the SET button for three seconds to toggle
the alarm on and the alarm off. The time alarm
icon will appear when set, and disappear when
disabled.
[SET]
Alarm Minute
Press the [+] or [-] key to increase or decrease the
alarm minute. While the alarm value is flashing,
press and hold the SET button for three seconds to
toggle the alarm on and the alarm off. The time
alarm icon will appear when set, and disappear
when disabled.
[SET]
Temperature Units of
Measure
Press the [+] key to switch between °F and °C units
of measure.
[SET]
Max/Min Clearing
The Max/Min can be programmed to clear daily (at
midnight) or manually. Press the [+] key to switch
between “Clears Daily” and Clears Manually
[SET]
Exit Set Mode
[SET] + 3 seconds means press and hold the SET button for three seconds.
[SET] means press but do not hold the SET button.
5.1.2 Viewing the High and Low Alarms
The high and low alarms can be set for Channels 1 and 2 only. Press the CH/+ button to switch the
display between Channel 1 and 2.
Next, press the SET button to view the High (MAX) and LOW (MIN) alarm along with the alarm
time. Press the SET button again to return to the normal mode.
5.1.3 Alarm Defaults

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Channel
Default Condition
HI ALARM (temperature) ºF
LOWALARM (temperature)ºF
1
OFF
100
60
2
OFF
110
90
5.1.4 Setting the Min and Max Alarm
The high and low alarms can be set for Channels 1 and 2 only. Press the CH/+ button to switch the
display between Channel 1 and 2.
Next, press the SET button once, and the alarm icon will appear: . Press and hold the SET
button for 3 seconds, and the temperature HIGH (max) alarm will flash. Press the CH/+ button to
increase the HIGH alarm and the MIN/MAX button to decrease the HIGH alarm. Press and hold the
+ or - button to change rapidly. While the alarm value is flashing, press and hold the SET button for
three seconds to toggle the alarm on and the alarm off. The alarm icon will appear when set, and
disappear when disabled.
Press (do not hold) the SET button again to set the LOW (min) temperature alarm. The LOW alarm
for temperature will flash. Press the CH/+ button to increase the LOW alarm and the MIN/MAX
button to decrease the LOW alarm. Press and hold the + or - button to change rapidly. While the alarm
value is flashing, press and hold the SET button for three seconds to toggle the alarm on and off the
alarm. The alarm icon will appear when set, and disappear when disabled.
5.2 Backlight Operation
To temporarily turn on the back light for five seconds, press the any button on the indoor sensor.
5.3 Manually Reset Max/Min
In normal mode, press the MIN/MAX button once to view the MAX values. Press the MIN/MAX
button again to view the MIN values.
Press the MIN/MAX button again to return to normal mode.
To reset the Max/Min values, press and hold the MIN/MAX- button for 3 seconds.
Note: Default function is Clearing Min/Max Daily.
The minimum and maximum can be set to clear daily (at midnight automatically) or manually. Clears
Daily ( will be displayed)
5.4 Channel Selection
Press the CH/+ button to switch the display between remote sensors 1 through 8, and scroll mode
. In scroll mode, all of detected outdoor sensors will be displayed in five second intervals.
5.5 Sensor Transmission
5.5.1 Sensor Search Mode
If any of the remote 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 CH/+ button to display this channel, then Press and hold
the CH/+ button for 3seconds, and the remote search icon will be constantly displayed
for up to 3 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
CH/+ button for 5seconds (on any channel), 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.
5.5.2 Best Practices for Wireless Communication
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.
Medium
RF Signal Strength Reduction
Glass (untreated)
5-15%
Plastics
10-15%
Wood
10-40%
Brick
10-40%
Concrete
40-80%
Metal
90-100%
5.6 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.
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

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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.
5.6.1 Remote Sensor Temperature Calibration
Prior to entering the calibration mode, press the CH/+ button to select the remote temperature sensor
you wish to adjust.
To enter the temperature calibration mode, press and hold the SET and CH/+ buttons at the same time
for 5 seconds and the SENSOR temperature value will begin flashing. Press the CH/+ 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 CH/+ or
MIN/MAX button.
To return the temperature to the actual or uncalibrated measurement, press the SET button.
Once the displayed temperature equals the calibrated source, press and hold the SET button for three
seconds, or wait 15 seconds for timeout, and the temperature value will stop flashing.
5.6.2 Indoor (Console) Temperature Calibration
To enter the indoor temperature calibration mode, press and hold the SET and MIN/MAX buttons at
the same time for 5 seconds and the INDOOR temperature value will begin flashing. Press the CH/+
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 CH/+ or
MIN/MAX button.
To return the temperature to the actual or uncalibrated measurement, press the SET button.
Once the displayed temperature equals the calibrated source, press and hold the SET 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 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.

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6. Glossary of Terms
Term
Definition
Accuracy
Accuracy is defined as the ability of a measurement to match the actual
value of the quantity being measured.
Range
Range is defined as the amount or extent a value can be measured.
7. Specifications
7.1 Wireless Specifications
Line of sight wireless transmission (in open air): 150 feet, 100 feet under most conditions.
Frequency: 433 MHz
Update Rate: 60 seconds
7.2 Measurement Specifications
The following table provides specifications for the measured parameters.
Measurement
Range
Accuracy
Resolution
Indoor Temperature
32 to 140 °F
± 2 °F
0.1 °F
Channel 1-8
Temperature
-40 to 140 °F
± 2 °F
0.1 °F
7.3 Power Consumption
Base station (display console) : 2 x AAA 1.5VAlkaline or Lithium batteries (not included)
2 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, Backlight often light and multiple sensors may reduce
the battery life.
Minimum 24 months for water sensor (use lithium batteries in cold weather climates less
than -4 °F)

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8. Troubleshooting Guide
If your question is not answered here, you can contact us as follows:
1. Email Support: [e-mail]
2. Live Chat Support: www.ambientweather.com/chat.html (M-F 8am to 3pmArizona Time)
3. Technical Support: 480-346-3380 (M-F 8am to 3pmArizona Time)
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 CH/+ 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.
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

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Problem
Solution
Indoor and outdoor temperature do not
agree
Allow up to one hour for the sensors to stabilize due to
signal filtering. The indoor and probe temperature sensors
should agree within 4 °F (the sensor accuracy is ± 2 °F).
Use the calibration feature to match the indoor and probe
temperature 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.
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 generates, uses and

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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 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.