Adafruit
AM2315C - Encased I2C Temperature/Humidity Sensor
The AM2315C is an enclosed I2C temperature and humidity sensor featuring the modern AHT20 sensor inside a rugged housing with mounting bracket. It offers the...
The AM2315C is an enclosed I2C temperature and humidity sensor featuring the modern AHT20 sensor inside a rugged housing with mounting bracket. It offers the same convenient form factor as the original AM2315 but with an updated sensor that supports a wider 2.5V to 5.5V supply range, making it compatible with both 3.3V and 5V microcontrollers.
With built-in pull-up resistors and standard I2C communication, this sensor connects easily to any Arduino or Raspberry Pi. The enclosed design provides much better environmental protection than bare PCB-mounted sensors, handling wind, rain, and outdoor conditions with ease. Take readings as frequently as you like — no timing-critical protocol to worry about.
Key Features
- I2C Interface – Standard I2C communication, no bit-bang timing protocol needed
- Wide Voltage Range – 2.5V to 5.5V, compatible with 3.3V and 5V logic
- Built-In Pull-Ups – Ready to connect with no external resistors required
- Rugged Enclosed Design – Protected housing with mounting bracket for real-world installations
- AHT20 Sensor Inside – Modern, reliable temperature and humidity sensing
Specifications
- Sensor – AHT20
- Interface – I2C (single fixed address)
- Supply Voltage – 2.5V to 5.5V
- Humidity Accuracy – ±2% RH (typical, at 20–80% RH)
- Temperature Accuracy – ±0.3°C (typical, at 20–60°C)
- Housing – Enclosed with mounting bracket
Ideal For
- Outdoor and semi-exposed environmental monitoring
- Weather stations and climate logging
- Greenhouse and agricultural sensing
- IoT and home automation projects
Package Contents
- 1× AM2315C Encased I2C Temperature/Humidity Sensor (with built-in pull-ups)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2C address
- An I2C address is the number a device uses so a microcontroller can tell it apart from other devices on the same I2C bus. It matters because two devices with the same fixed address may conflict if used together.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- UPS
- An uninterruptible power supply is a battery-backed power system that keeps a device running when external power is unplugged or fails. For an embedded computer, it helps prevent sudden shutdowns that can corrupt files or interrupt a project.
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