HIH-4030 Humidity Sensor

This is a breakout board for Honeywell's HIH-4030 humidity sensor. The HIH-4030 measures relative humidity (%RH) and delivers it as an analog output voltage. Voltage applied to the supply pins should be within 4-5.8VDC, and optimally at 5V. The sensor will typically only consume about 200μA.

Near linear, analog output
4-5.8VDC voltage supply
All pins broken out to a 0.1" pitch headerLaser trimmed interchangeability
Low power design, typical current draw of only 200μA
Enhanced accuracy
Fast response time
Stable, low drift performance
Dimensions: 0.75 x 0.30 " (19.05 x 7.62 mm)

$16.95 at Sparkfun, and at Pololu for the same price.

Microcontroller Connections
Here is an image of the TMP36 connected to an Arduino Uno, along with an HIH4030 humidity sensor and a MQ135 air quality sensor.

Code Sample Arduino Code