DFRobot Fermion: MCP9808 High Accuracy I2C Temperature Sensor


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SKU: 1254408
  1. High-temperature detection accuracy ±0.25°C/±0.5°C (typical/maximum)
  2. Wide temperature detection range from -40°C to +125°C
  3. Operating Voltage: 2.7~5.5V
  4. Operating Current: 200μA (typical)


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Brand: DF Robot
Category: Temperature & Humidity Sensor
Tags: DF robot Sensor

Compared to DS18B20, LM35, and other common temperature sensors, the MCP9808 is one of the more accurate temperature sensing options, with a typical accuracy of ±0.25°C and maximum accuracy of ±0.5°C over the sensor’s -40°C to +125°C range and precision of +0.0625°C.

The MCP9808 comes with user-programmable registers that allow user-selectable settings such as Shutdown or Low-Power modes and the specification of temperature Alert window limits and critical output limits. When the temperature changes beyond the specified boundary limits, the MCP9808 outputs an Alert signal. The user has the option of setting the Alert output signal polarity as an active-low or active-high comparator output for thermostat operation, or as a temperature Alert interrupt output for microprocessor-based systems.

These features make the MCP9808 ideal for sophisticated, multi-zone, temperature-monitoring applications.


  1. High-temperature detection accuracy ±0.25°C/±0.5°C (typical/maximum)
  2. Wide temperature detection range from -40°C to +125°C


  1. Industrial Freezers and Refrigerators
  2. Food Processing
  3. Personal Computers and Servers
  4. PC Peripherals
  5. Consumer Electronics

Package Includes:

1 x DFRobot Fermion: MCP9808 High Accuracy I2C Temperature Sensor

SKU: 1254408 Category: Tag:
Operating Voltage:


Operating Current

200μA (typical)


±0.25°C (typical) from -40°C to +125°C
±0.5°C (maximum) from -20°C to 100°C
±1°C (maximum) from -40°C to +125°C

User-Selectable Measurement Resolution

+0.5°C, +0.25°C, +0.125°C, +0.0625°C

User-Programmable Temperature Alert

Temperature Threshold Alert, Critical Temperature Alert

Communication Interface

I2C (2.54mm Breakout)



Mounting Hole Size


Mounting Hole Pitch


Shipping Weight 0.02 kg
Shipping Dimensions 6 × 6 × 2 cm

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Country Of Origin: China