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2). Step 2: RHT01 send data to MCU

When RHT01 is sending data to MCU, every bit's transmission begin with low-voltage-level that last 50us, the

following high-voltage-level signal's length decide the bit is "1" or "0". See below figures:

Attention:

If signal from RHT01 is always high-voltage-level, it means RHT01 is not working properly, please check the

electrical connection status.

7. Electrical Characteristics:

Items

Condition

Min

Typical

Max

Unit

Power supply

DC

3.3

5

6

V

Measuring

1

1.5

mA

Current supply

Stand-by

40

Null

50

uA

Collecting

period

Second

2

Second