| Pin | Name | Function |
|---|---|---|
| 1 | VCC | Power supply |
| 2 | DATA (OUT) | Single-wire digital data output |
| 3 | GND | Ground |
Summary
Simple digital temperature and humidity sensor. Cheap and beginner-friendly, but slow (1 reading per second) and low-accuracy compared to DHT22/ BME280 — fine for basic weather stations or learning projects, not for precise measurements.
- Interface: Single-wire digital (proprietary protocol)
- Supply voltage: 3.3V - 5.5V
- Humidity range: 20% - 90% RH, ±5% accuracy
- Temperature range: 0°C - 50°C, ±2°C accuracy
- Sampling rate: 1 reading per second