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Appendix B: Specifications
General
Operating Temperature. . . . . . . . . . . .+0° to +140°F (-18° to +60°C)
Storage Temperature . . . . . . . . . . . . .-22° to +158°F (-30° to +70°C)
Current Draw, Wireless . . . . . . . . . . .0.90 mA average, 20 mA peak, (plus 0.125
mA for each optional wireless transmitter in
use) at 4 to 6 VDC
Current Draw, Cabled . . . . . . . . . . . .10 mA average, 15 mA peak at 4 to 6 VDC
AC Power Adapter . . . . . . . . . . . . . . .5 VDC, 200 mA, regulated
Batteries . . . . . . . . . . . . . . . . . . . . . .3 AA-cells
Battery Life, Wireless . . . . . . . . . . . . .up to 4 months
Battery Life, Cabled . . . . . . . . . . . . . .up to 1 month
Connectors . . . . . . . . . . . . . . . . . . . . .Modular RJ-11
Cable Type . . . . . . . . . . . . . . . . . . . . .4-conductor, 26 AWG
Housing Material. . . . . . . . . . . . . . . . .UV-resistant PVC plastic
Dimensions
Wireless (includes antenna) . . . .6.5" x 4.50" x 1.5" (165 mm x 106 mm x 38
mm)
Cabled . . . . . . . . . . . . . . . . . . . .6.5" x 3.75" x 1.5" (165 mm x 95 mm x 38 mm)
Weight (with batteries) . . . . . . . . . . . .0.58 lbs. (0.26 kg)
Communications (Wireless Models Only)
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)
Range: Through Walls . . . . . . . . . . . .200 to 400 feet (60 to 120 m)
Sensor Inputs
RF Filtering. . . . . . . . . . . . . . . . . . . . .RC low-pass filter on each signal line
Sensor Outputs
Inside Temperature (sensor located in Envoy), oir with optional external temperature
probe.
Resolution and Units . . . . . . . . . .Current Data: 0.1°F or 1°F or 0.1°C or 1°C
(nominal) Historical Data and Alarms: 1°F or
1°C (Celsius is converted from Farenheit and
rounded to the nearese 0.1° or 1°C)
Range
Inside . . . . . . . . . . . . . . . . . . . .0° to +140°F (-18° to +60°C)
Extenal Temperature Probe . . .-40° to +150°F (-40 ° to +65°C)
Sensor Accuracy . . . . . . . . . . . . .±1°F (±0.5°C) typical
Update Interval . . . . . . . . . . . . . .1 minute
Current & Historical Data. . . . . . .Based on WeatherLink display
Alarms. . . . . . . . . . . . . . . . . . . . .High and Low Thresholds from Instant
Reading
