High Temp Waterproof DS18B20 Digital temperature sensor

This is a pre-wired and waterproofed version of the DS18B20 sensor made with a PTFE wire cable. Handy for when you need to measure something far away, or in wet conditions. The sensor in this housing can be used up to the sensor's 125 °C limit.

Because the sensor signal is 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.

This uses the Dallas 1-Wire protocol, which is somewhat complex, and requires a bunch of code to parse out the communication.

We include a 4.7k resistor, which is required as a pullup from the DATA to VCC line when using the sensor. You can get started by using the Dallas Temperature Control Arduino library which also requires the OneWire Library.

Cable specifications:

• Stainless steel #316 tube 6 mm diameter by 40 mm long
• Cable is approx 3 ft long / 90 cm long
• Contains DS18B20 temperature sensor
• Three wires - Orange Stripe connects to 3-5 V, White connects to ground and Blue Stripe is data.
• RoHS compliant

DS18B20 Technical specifications:

• 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 750 ms
• Usable with 3.0 V to 5.5 V power/data

Related tutorials:

• Adafruit's Raspberry Pi Lesson 11. DS18B20 Temperature Sensing
• Sous-vide controller powered by Arduino