SparkFun

Temperature Sensor - Waterproof (DS18B20)

Name: Temperature Sensor - Waterproof (DS18B20)
Brand: SparkFun
SKU: SF-SEN-11050
Price: 24.25 AUD
Availability: InStock

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This sealed digital temperature probe lets you precisely measure temperatures in wet environments with a simple 1-Wire interface. The DS18B20 provides 9 t...

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Ready to ship from Sydney: 12 in stock
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Order now — ships Mon 27 Jul

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This sealed digital temperature probe lets you precisely measure temperatures in wet environments with a simple 1-Wire interface. The DS18B20 provides 9 to 12-bit (configurable) temperature readings over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor.

Note: The pinout for this sensor is as follows: RED=Vcc BLACK=GND WHITE=SIG

Dimensions: Probe is 7mm in diameter and roughly 26mm long. Overall length (including wire) is 6 feet.

Features:

3.0-5.5V input voltage
Waterproof
-55°C to+125°C temperature range
±0.5°C accuracy from -10°C to +85°C
1 Wire interface

Documents:

Jargon buster

Plain-language definitions for the technical terms used above.

1-Wire: 1-Wire is a communication method where devices share a single data line, often with each device having its own address. It matters because several temperature modules can be connected to one microcontroller pin instead of needing a separate pin for each probe.
DS18B20: The DS18B20 is a common digital temperature sensor, often supplied in a waterproof stainless-steel probe, that sends its readings to a microcontroller over a 1-Wire connection. It is a typical choice for adding temperature data to environmental or water-monitoring projects.
GND: GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
VCC: VCC is the positive power-supply connection on a chip or module. Connecting it to the correct supply voltage is needed for the part to power on and helps avoid damaging the electronics.