Specification Brand : GalaxyElec BulletPoint1 : Delivery time: 7-18 days by special line for USA , 8-25 days by regular post for Worldwide,If it is not received within the specified time, please contact us and we will refund you in full. BulletPoint2 : If you need the product urgently, you can choose expedited service. We will use DHL to serve you. Delivery time: 3-7 days. BulletPoint3 : We are a professional distributor of electronic products.. Just search keywords in our store. BulletPoint4 : Please note that the products are only offered by the brand: GalaxyElec. Other sales people is not reliable. BulletPoint5 : any question,please feel free to contact me. ExternallyAssignedProductIdentifier : 5302611321549 ItemName : 20PCS DHT11 Digital Temperature and Humidity Sensor ItemTypeKeyword : humidifier-accessories Manufacturer : GalaxyElec Material : Plastic PartNumber : GEmoduleo_10162 ProductDescription : Free Shipping 20PCS DHT11 Digital Temperature and Humidity Sensor DHT series digital temperature and humidity sensor - full scale calibration, digital output - humidity measurement range: 20% to 9 0%RH (0-50 ° C temperature compensation); temperature measurement range: 0 to +50 ° C; humidity measurement accuracy: measurement accuracy of ± 5.0%RH temperature: ± 2 ° C response time: <5 seconds; low power consumption Technical parameters Power supply voltage: 3.3~5.5V DC Output: the single bus digital signal Measuring range: 20-90%RH humidity, temperature 0~50° The measurement accuracy of +-5%RH: humidity, temperature +-2 ° Resolution: 1%RH humidity, temperature 1 ° Exchangeability: fully interchangeable, Long term stability: < ± 1%RH/ ProductSiteLaunchDate : 2019-10-10T09:27:31.625Z SupplierDeclaredDgHzRegulation : unknown