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Waterproof DS18B20 Digital Thermal Probe or Sensor


This is a pre-wired and waterproofed version of the DS18B20 sensor. Handy for when you need to measure something far away, or in wet conditions. While the sensor is good up to 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 much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter. They work great with any microcontroller using a single digital pin, and you can even connect multiple ones to the same pin, each one has a unique 64-bit ID burned in at the factory to differentiate them. Usable with 3.0-5.0V systems. CityTech BD 

Not for use in salt water or other corrosive environments.

Cable Features :

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

DS18B20 Technical specs:

  1. Usable temperature range: -55 to 125°C (-67°F to +257°F)
  2. 9 to 12 bit selectable resolution
  3. Opto isolation circuitry
  4. Uses 1-Wire interface- requires only one digital pin for communication
  5. Unique 64 bit ID burned into chip
  6. Multiple sensors can share one pin
  7. ±0.5°C Accuracy from -10°C to +85°C
  8. Temperature-limit alarm system
  9. Query time is less than 750ms
  10. Usable with 3.0V to 5.5V power/data.CityTech BD 
General Specification
Supply voltage (V)3.0 – 5.5V
Temperature range-55 ~ +125 °C
Probe diameter6mm
Probe length50mm
Resolution9 ~ 12 bit
Query time750 msec
Cable Length (Meter)1
Shipment Weight0.08 kg
Shipment Dimensions7 × 5 × 3 cm


  1. Datasheet

Package Includes :

1 x 2 Channel isolated 5V 10A relay module with Optocoupler


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