YoLink Smart Outdoor Temperature & Humidity Sensor, Hygrometer, Thermometer, 1000' Long Range, 2 Years Battery Life, Emails, Text/SMS, App Alerts, Alexa, IFTTT Integration. ... Mini Bluetooth Temperature Humidity Sensor with APP Notification Alert, 2 Years Free Data Storage Export, 230 Feet Connecting Range ... Price. Up to $25; $25 to $50; $50 ...