HR643D Wireless In-outdoor Thermo & Hygrometer with

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HR643D Wireless In-outdoor Thermo & Hygrometer with
Posting date : Feb 23, 2011
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85-
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RF transmission frequency: 433.92 MHZ RF transmission range: 100 feet (30 meters) line-of sight Temperature sending: Around 40 seconds Temperature resolution : 0.1℃ (0.2℉) Storage temperature : -30 to 70℃ Humidity measuring range: 20% to 90%RH Centigrade and Fahrenheit Conversion Main Unit: 1)4-line LCD display in-outdoor temperature,clock and humidity separately. 2)433MHz transmission range to 30 meters. 3)Proposed operating range : 5 to 50℃ 4)Humidity measuring range: 20% to 95%RH 5)Memory maximum and minimum temperature and humidity readings 6)High/low temperature and humidity alarm 7)Use 2pcs UM-4 or “AAA” 1.5V battery 8)℃ / ℉ display conversion 9)Dimension: 140 x 110 x 50mm Remote Temperature Sensor 1)Display temperature range :-20.0 to +70.0℃ 2)Proposed operating temperature range : -20.0 to +60.0℃ 3)Relative humidity : Up to 100%, condensing 4)LED indicator for transmitting a reading 5)Slide switch for channel selection. 6)Suggest to use 2pcs UM-4 or “AAA” 1.5V alkaline battery 7)Dimension : 92×60×20 mm

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