Ambient Weather WS-16, User Manual

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Version 1.1 ©Copyright 2015, Ambient LLC. All Rights Reserved. Page 11
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.
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) : 3 x AAA 1.5V Alkaline 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 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)