Wireless Remote Sensor for Greenhouse Digital Thermometer and Hygrometer Temperature and Humidity Meter Home Monitoring System - AliExpress
S08S613B_2S Indoor/Outdoor Wireless Digital Weather Forecast Station H – Gain Express
Wireless Thermometer Hygrometer SENSOR (THGR268) for EMR963HG | Inspect USA
Amazon.com : Grower's Edge Digital Thermometer/Hygrometer with Remote Sensor : Patio, Lawn & Garden
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