Innovationhouse.com - Oregon Scientific Time and Weather
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
4115 Traceable Radio-Signal Remote Thermometer
Oregon Scientific THGR 810 specifications
Spare part for weather station (Transmitter / thermo hygro sensor) 433Mhz - AliExpress