Owner Manual

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%

5.7 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.

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.

5.8.1 Humidity Calibration

Prior to entering the calibration mode, press the CHANNEL/+ button to select the humidity sensor

you wish to adjust.

To enter the humidity calibration mode, press and hold the ALARM/ADJUST and MIN/MAX/-

buttons at the same time for 5 seconds and the 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 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. In addition, location has an adverse affect on humidity readings (installation over dirt

vs. lawn for example).