Wireless Communications

Transmit/Receive Frequency . . . . . . . . . . . . . . . . . . . . . . US Models: 902-928 MHz FHSS, Overseas Models: 868.0 - 868.6 MHz

FHSS

ID Codes Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Output Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 902-928 MHz FHSS: FCC-certified low power, less than 8 mW, no

license required 868.0 - 868.6 MHz FHSS. CE-certified, less than 8 mW, no license required

Range

Line of Sight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . up to 1000 feet (300 m)

Through Walls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 to 400 feet (75 to 150 m)

Sensor Output

Relative Humidity

Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1%

Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 to 100% RH

Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3% (0 to 90% RH), ±4% (90 to 100% RH)

Drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . up to ±2% per year

Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 seconds (depending on ID code)

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High and Low Threshold from Instant Reading

Temperature (Air)

Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1°F or 1°C. Celsius is converted from Fahrenheit and rounded to the nearest 1°C

Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40° to +150° F (-40° to +65° C)

Sensor Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1°F (±0.5°C) typical (see chart)

Radiation Induced Error . . . . . . . . . . . . . . . . . . . . . . . . . +2°F (1°C) at solar noon (insolation = 1040 W/m2, avg. wind speed 2 mph (1 m/s)) (reference: RM Young Model 43408 Fan-Aspirated Radiation Shield)

Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 seconds (depending on ID code)

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High and Low Thresholds from Instant Reading