Aosong Electronics Co.,Ltd

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Your specialist in innovating humidity & temperature sensors

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70us voltage-length means 1bit data "1"

Start transmit 1bit data

Start transmit next bit data

Host signal

Sesnor's signal

Single-bus signal

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If signal from DHT22 is always high-voltage-level, it means DHT22 is not working properly, please check the

electrical connection status.

7. Electrical Characteristics:

Item

Condition

Min

Typical

Max

Unit

Power supply

DC

3.3

5

6

V

Current supply

Measuring

1

1.5

mA

Stand-by

40

Null

50

uA

Collecting

period

Second

2

Second

*Collecting period should be : >2 second.

Thomas Liu (Business Manager)

Email: thomasliu198518@yahoo.com.cn

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