Wireless Thermometer Hygrometer Sensor Data Logger Digital C/F Indoor Outdoor bluetooth Temperature Humidity Meter Alarm

Features: 
Wireless App Control-We uses a high-end bluetooth 5.0 chip and can easily monitor temperature and humidity data on app via bluetooth. (free downloading from application store and google play). 
Higher Accurate Monitor-Using an accurate and sensitive Sensirion temperature and humidity sensor, it can achieve a temperature error of ± 0.5 °C (± 1 °F), a humidity error of ± 5%, and refresh once per second for higher accuracy. 
Data Storage Export-Support temperature data export function, record a group of data every 10 seconds, can store up to 100 days of data. Data on the APP shows red when data is beyond preset range. 
Portable Design-Wireless sensors Smaller size than other brands (1.3 x 1.3 x 0.47 inches). Space-saving and portable. It can be used for about 1year with CR2477 battery. 
bluetooth distance range-This product supports a barrier-free distance of 50 meters between the mobile phone and the transmitter. 

Specification: 
Temperature & Humidity- 
Temperature range: -20~65°C (-4~150°F); 
Temperature accuracy: 0.5°C; 
Humidity range: 0-100%RH; 
Humidity accuracy: 3.0%; 
Resolution: 0.1%; 
Sensor: MEMS digital sensor; 
Recorder interval: save once every 10 minutes; 
Recorder time: 100 days. 
bluetooth- 
BLE 5.0; 
Tx 10dBm, transmission distance of 100 meters in open environment; 
Rx Sensitivity-103dBm; 
Broadcast packet interval: 1 second. 
Electrical Indicators- 
Working voltage: 2.4~3V; 
Peak current: 10mA; 
Average current: 30uA; 
PCBA size: minimum size 2*2cm. 
App- 
IOS 4S and above; 
Android 4.3 and above; 
Simultaneously connected devices: 100. 

Package Includes: 
1/2/3 x Thermometer Hygrometer Sensor; 
1 x Lanyard; 
1 x User Manual.