Oregon Scientific THGR511 Wireless Temperature & Humidity Sensor for Version X Weather Stations (BAR208HGX, BAR208SX, BAR206AX) - Walmart.com
Oregon Scientific THGR 228N thermo/hygro sensor for AWS 888, BAR 998 HG, BAR 321 HG,
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
Oregon Scientific BAR688HGA Wireless Weather Station ONLY NO THERMO HYGRO SENSOR | eBay