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GY-21 HTU21 Sensor Module Humidity Sensor - Blue

GY-21 HTU21 Sensor Module Humidity Sensor for Arduino ARM AVR

SKU: 442252
  • US$8.55
  • 8.42
  • Free shipping To

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  • Dispatch: Ships within 4-7 business days
  • Form Color:


GY-21 HTU21 Sensor Module Humidity Sensor - Blue
GY-21 HTU21 Sensor Module Humidity Sensor for Arduino ARM AVR

GY-21 HTU21 Sensor Module Humidity Sensor - Blue

US$8.42 US$8.55 0 (0 reviews)
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The HTU21D(F) is a new digital humidity sensor with temperature output by MEAS. Setting new standards in
terms of size and intelligence, it is embedded in a reflow solderable Dual Flat No leads (DFN) package with a
small 3 x 3 x 0.9 mm footprint. This sensor provides calibrated, linearized signals in digital, I²C format.
HTU21D(F) digital humidity sensors are dedicated humidity and temperature plug and play transducers for OEM
applications where reliable and accurate measurements are needed. Direct interface with a micro-controller is
made possible with the module for humidity and temperature digital outputs. These low power sensors are
designed for high volume and cost sensitive applications with tight space constraints.
Every sensor is individually calibrated and tested. Lot identification is printed on the sensor and an electronic
identification code is stored on the chip – which can be read out by command. Low battery can be detected and
a checksum improves communication reliability. The resolution of these digital humidity sensors can be changed
by command (8/12bit up to 12/14bit for RH/T).
With MEAS’ improvements and miniaturization of this sensor, the performance-to-price ratio has been improved
– and eventually, any device should benefit from its cutting edge energy saving operation mode.
Optional PTFE filter/membrane (F) protects HTU21D digital humidity sensors against dust and water immersion,
as well as against contamination by particles. PTFE filter/membranes preserve a high response time. The white
PTFE filter/membrane is directly stuck on the sensor housing.

Voltage: 2.1V to 3.6V
Low power consumption: -0.15uA
I2C interface
Resolution: 0.04%RH, 0.02°C
Accuracy: ±2%RH, ±3°C

1, Full interchangeability with no calibration required in standard conditions
2, Instantaneous desaturation after long periods in saturation phase
3, Compatible with automatized assembly processes, including Pb free and reflow processes
4, Individual marking for compliance to stringent traceability requirements

Automotive: defogging, HVAC
Home Appliance
Quantity1 piece
Form ColorBlue
ApplicationDigital Relative Humidity Sensor with Temperature Output
Working Voltage 2.1~3.6V
English Manual / SpecYes
Download Link
Dimensions & Weight
Dimensions 0.51 in x 0.39 in x 0.12 in (1.3 cm x 1 cm x 0.3 cm)
Weight 0.14 oz (4 g)
Packing List
1 * GY-21 HTU21 Sensor Module

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Quantity 3+ units 5+ units 10+ units
Rate US$7.47 shipped US$7.44 shipped US$7.42 shipped

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