The D1 Mini Temperature Humidity Sensor Shield is using the well-known DHT11 sensor module with library support for Arduino and other environments.

DHT11 Temperature Humidity Sensor Specs:

• 3 to 5V power and I/O


• 2.5mA max current use during conversion (while requesting data)


• Good for 20-80% humidity readings with 5% accuracy


• Good for 0-50°C temperature readings ±2°C accuracy


• No more than 1 Hz sampling rate (once every second)