User manual

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)