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7. PRECAUTIONS
This product is engineered to give you years of satisfactory service if you handle it carefully. Here are
a few precautions:
1. Do not immerse the unit in water.
2. Do not clean the unit with abrasive or corrosive materials. They may scratch the plastic parts and
corrode the electronic circuit.
3. Do not subject the unit to excessive force, shock, dust, temperature or humidity, which may result
in malfunction, shorter electronic life span, damaged battery and distorted parts.
4. Do not tamper with the unit‘s internal components. Doing so will invalidate the warranty on the unit
and may cause unnecessary damage. The unit contains no user-serviceable parts.
5. Only use fresh batteries as specifi ed in the user‘s manual. Do not mix new and old batteries, as the
old ones may leak.
6. Always read the user’s manual thoroughly before operating the unit.
8. TECHNICAL SPECIFICATIONS
Base Station
(Supply = 6.0V, Ta = 23 °C)
Outdoor Sensor
(Supply = 3.0V, Ta = 23 °C )
RF Transmission Frequency
434 MHz
RF Reception Range
100 metres maximum (Line of sight)
Barometric Pressure Range
500 hpa to 1100 hpa (14.75 inHg to 32.44 inHg),
(At sea level)
(374.5 mmHg to 823.8 mmHg)
Altitude Compensation Range
-200 m to +5000 m (-657 ft to 16404 ft)
Barometric Pressure Resolution
0.1 hpa (0.003 inHg, 0.08 mmHg)
Barometric Pressure Accuracy
+/- 5 hpa (0.015 inHg, 0.38 mmHg)
Outdoor Temperature Display Range
-40°C to 80°C (-40°F to 176°F)
Indoor Temperature Display Range
-9.9°C to 60°C (14.2°F to 140°F)
Operating Temperature
0°C to 50°C (32°F to 122°F)
Storage Temperature
-20°C to 60°C (-4°F to 140°F)
Temperature Accuracy
+/- 1°C or +/- 2°F
Temperature Resolution
0.1°C or 0.2°F
Humidity Display Range
0% to 99%
Humidity Accuracy
+/- 5%
Humidity Resolution
1%
Receiving Cycle
Thermo-Hygro Outdoor Sensor
around 47 s
Sunrise and Sunset Accuracy
+/- 3 min (latitude /- 50°)
Temperature Sensing Cycle (indoor)
10 s
Humidity Sensing Cycle (indoor)
10 s
