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Oregon Scientific Thermometers: Oregon Scientific All Weather 433MHz Cable Free Thermo Hygro RF Clock Thermometer RTGR328NA
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Oregon Scientific THGR268; Wireless Temperature & Humidity Sensor, RF transmission Frequency : 433 MHz; Number of channels : 3; RF transmission Range : maximum 30 meters; Temperature sensing cycle : around 40 seconds (THGR268 TH-GR268 THGR-268 THG-R2
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