DS18B20 Temperature Sensor Module

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The DS18B20 Digital Thermometer provides 9 to 12-bit (configurable) temperature readings which indicate the temperature of the device. Information is sent to/from the DS18B20 over a 1-Wire interface so that only one wire (and ground) needs to be connected from a central microprocessor to a DS18B20. Power for reading, writing, and performing temperature conversions can be derived from the data line itself with no need for an external power source.

Because each DS18B20 contains a unique silicon serial number, multiple DS18B20s can exist on the same 1-Wire bus. This allows for placing temperature sensors in many different places. Applications where this feature is useful include HVAC environmental controls, sensing temperatures inside buildings, equipment or machinery, and process monitoring and control.

Connection Diagram

DS18B20 Connection Diagram
Operating Voltage 3V-5V DC
Digital Output Resolution 9-12 bits
Temperature Measurement Range -55°C to 125°C
Maximum Conversion Time and Response 750ms
Accuracy 0.5°C
Size 19x15x6mm
Country of Origin China

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