Fine offset HP2550 - Indoor Sensor Specifications; Power Specifications

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Indoor sensor
Specification
Temperature range
-10°C – 60°C (14°F - 140°F)
Temperature resolution
0.1°C, or 0.1°F
Humidity range
10% ~ 99%
Humidity resolution
1%
Barometric pressure range
300 – 1,100 hPa (8.85 – 32.5 inHg)
Barometric pressure accuracy
± 3 hPa in 700 – 1,100 hPa range
Barometric pressure resolution
0.1 hPa (0.01 inHg)
Sensor reporting interval
60 seconds
Alarm Duration
120 seconds
Table: Indoor sensor specification
Power
Specification
Base station/console
5V DC Adapter (included)
Indoor sensor
2 x AA 1.5 Alkaline batteries (not included)
Outdoor sensor
Solar panel (built-in)
Outdoor sensor (backup)
2 x AA 1.5V LR6 Alkaline (not included), or
2 x AA 1.5V Lithium battery (not included)
Table: Power specification
The primary power source for the outdoor sensor is the solar panel. When
available solar power (light over recent period) is insufficient, the batteries
will be used. In outdoor climates that frequently have sustained temperatures
below 0°C (or 32°F) the use of Lithium batteries is strongly suggested as
these are performing better than Alkaline batteries under such circumstances.