Product specifications

2-4
Vantage Pro2
TM
Accessories
Watermark Soil Moisture Sensor (# 6440)
Sensor Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical resistance
Standard Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15' (4.6 m) Watermark standard two-wire, stripped and tinned
Maximum Cable Length . . . . . . . . . . . . . . . . . . . . . . . . . . 18 AWG: 1000' (UF wire recommended)
Multi-Purpose Temperature Probe (# 6470)
Sensor Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermistor
Standard Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15' (4.6m) 22 AWG direct burial cable, stripped and tinned
Maximum Cable Length . . . . . . . . . . . . . . . . . . . . . . . . . . 24 AWG: 800' (244 m), 22 AWG: 1200' (365 m)
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
Leaf Wetness
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 15
Dry/Wet Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . User-selectable
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.5
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 to 18 seconds
Soil Moisture (Watermark Soil Moisture Sensor)
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 cb (centibar)
Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 200 cb
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.5 to 75 seconds
Temperature
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)
Sensor Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1°F (±0.5°C) up to 110°F (43°C), ±2°F (±1°C) over 110°F (43°C)
(see Fig. 1)
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.5 to 75 seconds