Waterproof DS18B20 Digital temperature sensor extras

Waterproof DS18B20 Digital temperature sensor extras

Waterproof DS18B20 Digital temperature sensor extras




Dallas DS18B20 digital temperature sensor in water resistant sheath. It communicates via the Dallas 1-Wire protocol. Operating range -55 / 125 ° C with selectable resolution 9 / 12-bit. Included in the package is a resistance from 4.7k necessary as a pull-up for the data line. If you were looking for an analog temperature sensor and easier to use we also have the classic TMP36.

Available version :: 3 available COD: AD381 Categories: ,


This is a pre-wired and waterproofed version of the DS18B20 sensor. Handy for when you need to measure something away, or in wet conditions. 125 ° C the cable is jacketed in PVC so we suggest keeping it under 100 ° C. Because they are digital, you don't get any signal degradation even over long distances! These 1-wire digital temperature sensors are fairly precise (± 0.5 ° C over most of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter. They have a unique 64-bit ID burned in the factory to differentiate them. Usable with 3.0-5.0V systems.

The only downside is they use the Dallas 1-Wire protocol, which is somewhat complex, and requires a bunch of code to parse out the communication. If you want something really simple, and you have an analog input pin, the TMP36 is trivial to get going.

We co in a 4.7k resistor, which is required as a pullup from the DATA to VCC line when using the sensor. We do not have a detailed tutorial on yet but you can get started by using the Dallas Temperature Control Arduino library which requires also the OneWire Library.


Cable specs:

  • Stainless steel tube 6mm diameter by 30mm long
  • Cable is 36 ″ long / 91cm, 4mm diameter
  • Contains DS18B20 temperature sensor
  • If your sensor has four wires - Connected to 3-5V, Connected to ground and White is data. The copper wire is soldered to the wire shielding
  • If your sensor has three wires - Blue / Black connects to ground and Yellow / White is data

DS18B20 Technical specs:

  • Usable temperature range: -55 to 125 ° C (-67 ° F to + 257 ° F)
  • 9 to 12 bit selectable resolution
  • Uses 1-Wire interface- requires only one digital pin for communication
  • Unique 64 bit ID burned into chip
  • Multiple sensors can share one pin
  • ± 0.5 ° C Accuracy from -10 ° C to + 85 ° C
  • Temperature-limit alarm system
  • Query time is less than 750ms
  • Usable with 3.0V to 5.5V power / data

Additional information

Weight 0.05 kg
Dimensions 5 × 1 × 3 cm




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