Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | AM2301 |
| Communication Protocol | Single-Bus Digital |
| Humidity Range | 0-100% RH |
| Temperature Range | -40°C to 80°C |
| Humidity Accuracy | ±2% RH |
| Temperature Accuracy | ±0.5°C |
| Operating Voltage | 3.3V - 5.5V DC |
| Sampling Period | 2 seconds |
| Package Type | Module with PCB |
| Application | IoT, HVAC, Weather Stations |
Anonymous
Mar 29, 2026
Rating: 5/5
Perfect for my weather station project
This sensor module works flawlessly with my Arduino setup. The single-bus interface makes wiring incredibly simple, and the readings are consistent with my professional hygrometer.
Anonymous
Mar 21, 2026
Rating: 5/5
Best budget sensor
Compared to other sensors in this price range, the AM2301 offers superior accuracy. Shipping was fast, and the module arrived well-packaged.
Anonymous
Mar 21, 2026
Rating: 5/5
Exactly what I needed
Compact form factor and robust performance. It handles the humidity in my greenhouse without any issues. Highly recommended for Raspberry Pi projects.
Anonymous
Mar 08, 2026
Rating: 4/5
Solid performance
Works well out of the box. The library support for ESP32 is excellent. Just ensure you have a pull-up resistor if your board doesn't include one internally.
Anonymous
Mar 03, 2026
Rating: 5/5
Reliable and accurate
I have deployed ten of these in different rooms. They all report stable data over the last three months. The response time is quick enough for real-time monitoring applications.
Anonymous
Mar 02, 2026
Rating: 4/5
Good value, easy to integrate
Great little sensor for the price. I used it for a smart home humidity monitor. The only reason for 4 stars is that the documentation could be slightly more detailed for beginners.
Q: How often should the sensor be calibrated?
A: The AM2301 is factory calibrated. Under normal operating conditions, it maintains accuracy for years without recalibration. Extreme environments may require periodic verification against a reference standard.
Q: Is this module compatible with 5V logic levels?
A: Yes, the AM2301 module operates within a voltage range of 3.3V to 5.5V, making it fully compatible with both 3.3V and 5V microcontrollers.
Q: Does this come with a waterproof casing?
A: No, this specific listing is for the bare PCB module. The sensing element itself has some protection, but for outdoor use, we recommend purchasing a separate waterproof enclosure.
Q: What is the maximum cable length recommended for the single-bus connection?
A: For reliable communication, we recommend keeping the cable length under 2 meters. If longer distances are required, a stronger pull-up resistor or signal buffer may be necessary.
Q: Can I connect multiple sensors to the same data pin?
A: Yes, you can connect multiple AM2301 sensors to the same data pin using the single-bus protocol, provided each sensor has a unique address or is polled sequentially as per the datasheet instructions.
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