DAVIS Vantage Pro2 Weather Envoy, User Manual

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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)

ID Codes Available . . . . . . . . . . . . 8
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), or 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 Fahrenheit and 
rounded to the nearest 0.1° or 1°C)

Region

Frequency Range and Power Output

USA

902 - 928 MHz FHSS, <8mW

EU

868.0 - 868.6 MHz FHSS, <8mW

Australia, Brazil

918 - 926 MHz FHSS, <8mW

New Zealand, Peru

921 - 928 MHz FHSS, <8mW

India

865 - 867 MHz FHSS, <8mW

Japan

928.15 - 929.65 MHz FHSS,1mW

Taiwan

920 - 925 MHz FHSS, <8mW