A quick Google search for the best SmartThings humidity sensor results in a lot of out-dated information, and products that are no longer being made or supported. They have lux and motion sensors too, but you can reduce their sensitivity so they have minimal impact on battery life if you don’t need them. Whenever you need a reliable way of measuring the temperature of the water in your pool or judging the readiness of your garden for planting season, this is the sensor to get. The monitor’s display is informative, showing the current temperature and humidity in big bold numbers. It requires something called a custom device handler and from what I can tell if your tech savy enough and can follow basic instructions, this shouldn’t be too big a deal. US$93.38 US$105.07 11% Off Smart WiFi PM2.5 And Temperature And Humidity Sensor Environmental Detector Air Quality Monitor (Tuya Smart Life APP) 0 review COD US$18.99 US$25.98 27% Off MoesHouse US 4 Gang Smart Glass Panel Switch Smart Life/Tuya App Multi-Control Association Voice Control with Alexa Google Home 0 review COD Historical data isn’t available, but the WS-10-X4 does keep track of each sensor’s minimum and maximum recorded readings.

Lastly, the Wi-Fi connection can be spotty.
Greater deviations suggest either that the sensor is inaccurate or that its margin of error is wide, none of which are desirable. Once the humidity rises to say, 35%, the humidity sensor tells the smart plug to turn off. The line graph you have access to in the app isn’t a good tool for keeping track of fluctuations because only the minimum and maximum readings are shown, leaving you to guess at the readings in-between. Apart from that, the sensors’ signal strength could be better. If you have have other Z Wave devices they should create a mesh network and help resolve any limited range issues you may have. The companion app is designed to give you a clear overview of current temperature and humidity readings. If you know that the environment hasn’t been altered and the unit’s readings keep fluctuating, then it’s not a reliable piece of equipment. If a sensor’s output doesn’t correspond to an accurate measurement you took elsewhere, you can calibrate it manually and the console will display the true result. Plug it in and you’re ready to go, unless you also want to pair it with HomeKit that is, in which case you’ll need to scan the provided QR code. 2.0 (motion / light / temperature / humidity), Airthings 2950 Wave (2nd Gen) - Smart Radon Detector with Humidity & Temperature Sensor – Easy-to-Use – Accurate – No Lab Fees – Battery Operated - Free App, ThermoPro TP90 Smart Wireless Indoor Hygrometer WiFi Thermometer with Free iOS/Android App, Compatible with Alexa, Inkbird Thermometer and Hygrometer Smart Sensor Data Logger with Waterproof External Probe Magnet Alert for Android and iOS Used for Food Storage Brewing Reptiles Instrument IBS-TH1, Smart Wireless Homekit Motion Sensor Humidity Sensor Hygrometer Thermometer Automatically Trigger, Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready, uHoo Indoor Air Quality Sensor – 9 in 1 Smart Air Monitor with Temperature and Humidity Gauge, CO2, Dust (PM2.5), VOC, NO2, Allergen Meter -to Breathe Easy and Boost Health, ThermoPro TP50 2 Pieces Digital Hygrometer Indoor Thermometer Room Thermometer and Humidity Gauge with Temperature Humidity Monitor, Inkbird ITC-608T Temperature and Humidity Controller 1800W ETL Listed AC Dual Stage Outlet Thermostat with Temperature and Humidity Sensor Mushroom Greenhouse Reptile, KOOKYE 16 in 1 Smart Home Sensor Modules Kit for Arduino Raspberry Pi DIY Professional, Sonoff TH16 WiFi Smart Switch with Temperature Monitoring,Works with Alexa & Google Assistant(with DS18B20), Govee WiFi Thermometer Hygrometer, Smart Humidity Temperature Sensor with App Notification Alert, 2 Years' Free Data Storage Export, Wireless Remote Monitor for Room Greenhouse Incubator Wine Cellar, Google Nest Temperature Sensor - Nest Thermostat Sensor - Nest Sensor That Works with Nest Learning Thermostat and Nest Thermostat E - Smart Home, tempi.fi Mini Wireless Temperature and Humidity Sensor - Developed in The USA - 24/7 Data Logger with Alarm – Bluetooth Smart Thermometer and Hygrometer - Monitor Refrigerator Freezer Pets Humidor, Peakeep Indoor Humidity Temperature Digital Alarm Clock for Bedrooms, Smart Night Light, Battery Operated Small Easy Desk Bedside Gifts Clock (Black), Govee Temperature Humidity Monitor, 2 Pack Indoor Bluetooth Temperature Sensor with Alert Notification, Free Data Store Accurate Hygrometer Thermometer for Home Office Baby Room Greenhouse Reptile, Aeotec Multisensor 6, Z-Wave Plus 6-in1 motion, temperature, humidity, light, UV, vibration sensor, MESH Smart Trigger: Temperature and Humidity, AcuRite 00613 Digital Hygrometer & Indoor Thermometer Pre-Calibrated Humidity Gauge, 3" H x 2.5" W x 1.3" D, La Crosse Technology 308-1414W Wireless Atomic Digital Color Forecast Station with Alerts, White, Inkbird Smart Sensor Data Logger Wireless Temp RH Monitor Device Android iPhone Temperature Humidity Recorder Thermometer Hygrometer IBS-TH1 Cigar Humidor Basement Guitar Greenhouse, VegTrug Soil Tester, Smart Plant Monitor Bluetooth 4 in 1 Detector Automatically Monitors Humidity/Light/Fertility/Temperature Levels for iOS and Android - Indoor Use Only (International Version), BFOUR Hygrometer Indoor Thermometer, Hygrometer Humidity Gauge Room Thermometer Digital Hygrometer Indoor Temperature Humidity Monitor High-Precision Digital Sensor(HD Large Display), BEYELIAN Beauty Salon Use Digital Thermo Hygrometer Indoor Humidity Temperature Monitor ℃/℉ Switch for Home, Office, Greenhouse, Warehouse, ThermoPro TP52 Digital Hygrometer Indoor Thermometer Temperature and Humidity Gauge Monitor Indicator Room Thermometer with Backlight LCD Display Humidity Meter.