Aosong
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The accurate sibling of the DHT11: ±0.5°C and ±2% RH, and it reads negative temperatures. Same single-wire protocol, same wiring.
| Part number | DHT22 |
|---|---|
| Manufacturer | Aosong |
| Category | Sensors › Temperature & Humidity |
| Package | Header-1x4 |
| Pins | 4 |
| Tolerance | 2 % |
DHT22 pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | VCC | power | Supply, 3.3–6V |
| 2 | DATA | bidirectional | Single-wire data — 4.7k pull-up |
| 3 | NC | nc | Not connected |
| 4 | GND | ground | Ground |
Schematic symbol and footprint
Schematic symbol
Footprint: Header 1x4 — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
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