Inkbird Smart Sensor Data Logger Wireless Temp RH Monitor Device Android iPhone Temperature Humidity Recorder… Price: $28,99 (as of 28/11/2021 14:26 PST- Details) & FREE Shipping.

Attention: Since the upgradation of SDK(Software Development Kit)to the latest version 26,it is necessary to launch the GPS to tag your position for scanning BT device,which are applicable to the version starting from 23.
Monitoring range: 30 meters / 100ft (No obstructions).Temperature Range: -104〜140°F / -40〜60°C(Inner sensor)-104〜212°F / -40〜100°C(External probe).Humidity Range: 0~99%RH and fast response. Use the new generation of France HTU21D temperature and humidity sensors. Power consumption will be lower and working life will be longer.
Data Storage & Sampling Interval:Hold data for 20 days if the sampling interval is 1min, the max date storage is 30000 point. Different sampling interval (10s, 30s, 1min, 2min, 5min, 10min, 30min) can be setting. The saving data time will be different if you choose different sampling interval.