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Review Details

Electronic Brick - DHT11 Humidity Temperature Sensor Brick

Electronic Brick - DHT11 Humidity Temperature Sensor Brick

Product Review (submitted on July 20, 2013):
This is cheaper than the DHT11 by itself from competitors, and it comes with a convenient 3 pin and 4 pin connector so you can mount the sensor where you need it and keep the Arduino safe in another place.

Also comes with a resistor and 2 mounting holes. It's ready to go. Response time is about 1 second, and temperature reading is not as accurate or responsive as the DS18B20 (also sold by iteastudio.com for slightly less than this device), but this unit (DHT11) does humidity as well for a few cents more, so the trade-off is worth it when you need both sensors.

This works off 1 single data pin (1 is not used, the other 2 are ground and voltage).

I used mine to control a fan in my bathroom to turn on and off automatically when someone takes a shower. It works beyond perfectly for this use. The ITeaduino Nano sits inside my ceiling fan tucked away with a 5v adapter and wifi module, and the humidity sensor sticks out to get a better reading). You also can detect a fault in the unit, and call it to your attention with a cheap NRF24L01 2.4ghz wifi module for just a few dollars (also sold by iteastudio.com). You can send a log over wifi so you can keep track of how much humidity enters the room or the temperature to automate your HVAC system as well.

This unit is perfect.