Waterproof DS18B20 Digital Temperature Sensor for Arduino (IP68, -10°C to +85°C)

This product is the waterproof version of the DS18B20 temperature sensor, specifically designed for temperature measurements in distant or humid environments. This temperature & humidity sensor has a wide temperature range of -55°C to 125°C, but it is recommended to keep the included PVC jacketed cable below 100°C to ensure optimal performance and durability.

The DS18B20 waterproof temperature sensor is a digital sensor that maintains signal integrity even over long distances. It utilizes a 1-Wire interface, connecting to a central microprocessor through a single wire (along with a ground wire).

Note: This sensor includes the probe with bare wires only. For a solderless connection with a pluggable terminal adapter, please check the Gravity: Waterproof DS18B20 Sensor Kit.

Each DS18B20 temperature sensor has a unique silicon serial number, useful for verifying its authenticity and enabling the connection of multiple sensors on a single 1-Wire bus. This feature facilitates the installation of temperature sensors in various locations for applications like indoor temperature monitoring, smart home integration, object temperature detection, greenhouse farming, and more.

• Usable with 3.0V to 5.5V power/data
• ±0.5°C Accuracy from -10°C to +85°C
• 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 the chip
• Multiple sensors can share one pin
• Temperature-limit alarm system
• Query time is less than 750ms
• 3 wires interface:
  • Type A
    • Red wire - VCC
    • Black wire - GND
    • Yellow wire - DATA
  • Type B (Recently there's a series of sensors using this pin mapping. Sorry for the inconvenience.)
    • Red wire  - VCC
    • Yellow wire - GND
    • Green wire - DATA
• Stainless steel tube 6mm diameter by 35mm long
• Cable diameter: 4mm (0.16)
• Length: 95cm (37.4")

This project introduces to DIY a TDS meter with my analog TDS sensor, and use the meter to detect the TDS of tap water before and after filtration. Moreover, I can use it to do some interesting experiments. Let's have a go.

• Wiki
• Document
• Sample code for Arduino 1.0
• Sample code for IDE under 1.0
• One Wire library
• How it works- DS18B20 and Arduin
• Zip file with all of the above

• Waterproof DS18B20 Digital temperature sensor x1

(Note: Terminal adapter not included. Please solder a 4.7k resistor between VCC and Data for usage, or choose the Gravity Kit version for plug-and-play.)