what is this?

[Barna]

Hi,

I have bought a AM2301 from ebay, it was ok, so I have ordered another 2pcs.
But the new ones are not same, could you help me to identify what it is ?

thanks
Barna

[dbemowsk]

@barna Looks like a DHT21 (AM2301) temp/humidity sensor module. What is that out of?

[dbemowsk]

Looks like this without the cover

[Barna]

yes, the covers are same, I have an another AM2301, which works, but it looks inside like this

[Barna]

the code that I use with this does not work with the "non identified" sensor

[dbemowsk]

@barna Can you show a picture of your wiring and what code you are using?

[DavidZH]

The surface of the sensor appears to be a light-sensitive semiconductor. Maybe you can unscrew the little PCB from the case and see on the bottom. There could be some information there.