SKU: SENS-3775
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7Semi DS18B20 Waterproof Temperature Sensor Probe 1m Cable, 2-Inch, -55°C to +125°C - 1-Wire Digital

₹259.00 (Inclusive of all taxes)
Out of Stock

The 7Semi DS18B20 is a digital temperature sensor probe featuring a 2-inch stainless steel tip and a 1-meter waterproof cable. It communicates via a 1-Wire interface for easy integration with Arduino, Raspberry Pi, ESP32, and other 3.3V/5V microcontrollers, providing accurate temperature readings from -55°C to +125°C.

Features

  • Wide operating range from -55°C to +125°C for extreme environment monitoring.
  • High accuracy of ±0.5°C within the -10°C to +85°C range.
  • 1-Wire digital interface enables multi-sensor networking on a single data line.
  • IP68-equivalent waterproof stainless steel probe for immersion and harsh conditions.
  • Direct compatibility with 3.0V to 5.5V systems and common development platforms.

Out of stock

Description

The DS18B20 digital temperature sensor utilizes a 1-Wire communication protocol, allowing for precise temperature data acquisition with minimal wiring. Its integrated 12-bit ADC provides programmable resolution from 9 to 12 bits, with a maximum conversion time of 750ms for the highest precision reading.

Encased in a durable stainless steel probe with a 2-inch sensing tip and a 1-meter PVC-jacketed cable, this sensor is engineered for reliable performance in wet, corrosive, or outdoor environments. It is ideal for direct immersion in liquids or integration into sealed systems requiring robust thermal monitoring.

Key Features

  • Digital 1-Wire interface simplifies wiring and supports multi-drop bus topology.
  • Stainless steel AISI 304 probe housing ensures corrosion resistance and mechanical durability.
  • Programmable 9 to 12-bit resolution allows users to balance precision and conversion speed.
  • Wide 3.0V to 5.5V supply voltage range ensures compatibility with both 3.3V and 5V logic systems.
  • Waterproof cable and sealed probe design (IP68 equivalent) suit submersible and outdoor applications.
  • High-accuracy silicon-based sensing element with factory-calibrated digital output.
  • Each sensor has a unique 64-bit serial code for easy identification on a shared bus.

Applications

  • Liquid temperature monitoring in aquariums, hydroponics, and brewing systems.
  • HVAC and climate control system feedback for duct or refrigerant line sensing.
  • Outdoor environmental monitoring and weather station temperature probes.
  • Industrial process control for tanks, pipelines, and machinery temperature checks.
  • DIY electronics and microcontroller projects requiring robust, waterproof sensing.

Technical Specifications

Sensor ModelDS18B20
Temperature Range-55°C to +125°C
Accuracy±0.5°C (-10°C to +85°C), ±2°C (full range)
ResolutionProgrammable 9 to 12 bits
Supply Voltage (VDD)3.0V to 5.5V
Interface1-Wire Digital
Probe MaterialStainless Steel
Probe Length2 Inch (approx. 50.8 mm)
Cable Length1 Meter
Cable TypeWaterproof PVC Insulated
Conversion Time (max)750 ms (at 12-bit resolution)
Mounting TypeProbe with Cable

Frequently Asked Questions

What is the required wiring and external components for the DS18B20?

The DS18B20 uses a 1-Wire interface requiring three connections: VDD (3.0-5.5V), GND, and a single data line. A 4.7 kΩ pull-up resistor is typically required on the data line to the supply voltage for reliable communication. Ensure your microcontroller's GPIO pin can be configured for open-drain or has a weak pull-up enabled.

How many DS18B20 sensors can I connect to a single microcontroller pin?

The 1-Wire protocol supports a multi-drop bus, allowing many DS18B20 sensors to share a single data line. The practical limit depends on bus capacitance and pull-up strength, but dozens of sensors can be connected. Each sensor has a unique 64-bit ROM address for individual identification and communication.

Is this sensor suitable for submersible applications in water or other liquids?

Yes, the stainless steel probe tip and waterproof cable sealing provide an IP68-equivalent rating, making it suitable for temporary or permanent immersion in non-corrosive liquids. For long-term submersion or harsh chemicals, verify the stainless steel grade (typically AISI 304) is compatible with your medium.

What is the difference between parasite power mode and local power mode?

In local power mode, the sensor uses the VDD pin for its supply. In parasite power mode, the sensor draws power from the data line during specific timing windows, allowing a 2-wire connection (data and GND). For best stability and higher conversion speeds, local power mode with a separate VDD connection is recommended.

Package Includes

  • 1 x 7Semi DS18B20 Waterproof Temperature Sensor Probe (1m cable)

Additional Information

Weight 0.024 kg
Dimensions 6 × 5 × 3 cm