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Dedicated adapter board module for DS18B20 sensor with DFR0055 Plugable Terminal

SKU: FA3052-2
Module Type

DS18B20 sensor adapter board
Adapter Model

DFR0055 (Terminal Sensor Adapter V2.0)
Operating Voltage

5V DC (3.3V compatible)
Current Capacity

<1000mA
Onboard Resistor

10kΩ pull-up between signal and power
Terminal Type

3-pin pluggable screw terminal
Board Dimensions

Approx. 22 × 34 mm
Compatibility

DS18B20 and other 1-Wire sensors

The DS18B20 Sensor Adapter Board Module with DFR0055 Pluggable Terminal is a dedicated breakout board designed to simplify the connection of DS18B20 temperature sensors to microcontrollers without soldering. It combines the functionality of a pluggable terminal block with onboard pull-up resistors, making it an ideal accessory for rapid prototyping, educational projects, and field-installed temperature monitoring systems.

At the heart of the module is the DFR0055 Terminal Sensor Adapter, a universal sensor adapter that provides a 3-pin pluggable terminal for secure, screw-tightened wire connections. Unlike bare DS18B20 probes that require soldering or fragile jumper wires, this adapter accepts the stripped ends of the sensor cable directly into the terminal block, ensuring a stable and repeatable connection. The adapter features onboard 10kΩ pull-up resistors between the signal and power lines, eliminating the need for external resistors when using the DS18B20 . This is particularly important because the DS18B20 1-Wire protocol requires a pull-up resistor for reliable communication, and forgetting to add one is a common source of reading errors.

The DFR0055 is designed for 5V operation (with support for 3.3V systems) and can handle currents up to 1000mA, well beyond the needs of a temperature sensor . The board measures approximately 22mm × 34mm, making it compact enough to fit into small enclosures or project boxes. The pluggable terminal accepts standard wire gauges and provides a secure mechanical connection that resists vibration and accidental disconnection.

For DS18B20 integration, the wiring is straightforward: connect the sensor’s DATA wire to terminal A, VCC to terminal B, and GND to terminal C . The onboard pull-up resistor is already in place, so no additional components are needed. The adapter can then be connected to the microcontroller using a standard 3-pin sensor cable (often included with the adapter) or jumper wires.

This adapter is widely used in temperature monitoring systems, aquarium and hydroponic setups, weather stations, HVAC controls, and educational STEM projects where quick, reliable sensor connections are essential. It is also a practical choice for field deployments where soldering is impractical and connections must be secure.

Important Note: While the DFR0055 includes onboard pull-up resistors, verify that the resistor is enabled for your specific sensor configuration. The adapter is designed for 5V logic systems; when using with 3.3V microcontrollers, confirm compatibility with your sensor’s voltage requirements. The pluggable terminal is not waterproof—for wet environments, ensure the adapter is housed in a dry enclosure. The DS18B20 sensor itself is sold separately unless purchased as part of a kit.

Whether you are building a multi-sensor temperature network, prototyping a thermostat, or deploying sensors in the field, the DS18B20 Adapter Board with DFR0055 Pluggable Terminal provides a reliable, solder-free connection solution that saves time and reduces wiring errors.

Features

  • DFR0055 pluggable terminal adapter — Screw-tightened connections for secure, solder-free wiring

  • Onboard 10kΩ pull-up resistors — No external resistor needed for DS18B20 1-Wire communication

  • 3-pin terminal block — Accepts stripped wire ends directly for quick installation

  • 5V operation — Compatible with standard Arduino and 5V microcontroller systems

  • Compact 22×34mm board — Fits into small enclosures and project boxes

  • High current capacity — Supports up to 1000mA, far exceeding sensor requirements

  • DS18B20 optimized — Wiring defined for DATA, VCC, and GND terminals

  • Solder-free installation — Ideal for field deployment and rapid prototyping

  • Wide application range — Temperature monitoring, aquariums, hydroponics, HVAC, education

  • Reliable connection — Terminal block resists vibration and accidental disconnection

Technical Specifications 

# Parameter Specification
1 Module Type DS18B20 sensor adapter board
2 Adapter Model DFR0055 (Terminal Sensor Adapter V2.0)
3 Operating Voltage 5V DC (3.3V compatible)
4 Current Capacity <1000mA
5 Onboard Resistor 10kΩ pull-up between signal and power
6 Terminal Type 3-pin pluggable screw terminal
7 Board Dimensions Approx. 22 × 34 mm
8 Compatibility DS18B20 and other 1-Wire sensors

Usage

Getting Started

  1. Prepare the sensor cable — Strip a short length of insulation from the DATA, VCC, and GND wires of your DS18B20 probe.

  2. Connect to the terminal — Insert the wires into the pluggable terminal block: DATA → terminal A, VCC → terminal B, GND → terminal C . Tighten the screws securely.

  3. Verify the pull-up — The DFR0055 includes an onboard 10kΩ pull-up resistor. No additional resistor is required .

  4. Connect to the microcontroller — Use a 3-pin sensor cable or jumper wires to connect the adapter to your Arduino: A → digital pin (e.g., D2), B → 5V, C → GND.

  5. Install libraries — Install OneWire and DallasTemperature through the Arduino Library Manager.

  6. Upload a test sketch — Use the DallasTemperature example to read and display temperature over Serial.

Terminal Connections

Terminal DS18B20 Wire Arduino Connection
A DATA (Yellow) Digital pin (e.g., D2)
B VCC (Red) 5V
C GND (Black) GND

Example Arduino Code (DallasTemperature)

cpp
#include <OneWire.h>
#include <DallasTemperature.h>

#define ONE_WIRE_BUS 2

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

void setup() {
  Serial.begin(9600);
  sensors.begin();
}

void loop() {
  sensors.requestTemperatures();
  float tempC = sensors.getTempCByIndex(0);
  Serial.print("Temperature: ");
  Serial.print(tempC);
  Serial.println(" °C");
  delay(1000);
}

Typical Applications

  • Temperature monitoring systems — Quick connection of DS18B20 probes to Arduino

  • Aquarium and hydroponic setups — Secure, solder-free sensor wiring

  • Weather stations — Field-deployable temperature sensing

  • HVAC controls — Reliable sensor connections in equipment

  • Educational STEM projects — Teaching 1-Wire protocol and sensor integration

  • Multi-sensor networks — Multiple adapters on a single bus

Notes for Business Buyers

  • Solder-free design — Reduces assembly time and eliminates cold solder joints in production

  • Onboard pull-up — Simplifies BOM and reduces component count for DS18B20 integrations

  • DFR0055 compatibility — Proven adapter module with extensive documentation and community support

  • Suitable for bulk purchasing — Ideal for educational kits, sensor network integrators, and HVAC product developers

Q: What is the DS18B20 Adapter Board with DFR0055 used for?

It is a dedicated breakout board that simplifies connecting DS18B20 temperature sensors to microcontrollers using a pluggable terminal block, eliminating the need for soldering and external pull-up resistors.

Q: What is the DFR0055?

The DFR0055 is a universal terminal sensor adapter (V2.0) from DFRobot that provides a 3-pin pluggable terminal and onboard 10kΩ pull-up resistors for connecting sensors to Arduino boards .

Q: Do I need an external pull-up resistor for the DS18B20?

No. The DFR0055 adapter includes onboard 10kΩ pull-up resistors, so no external resistor is needed for reliable 1-Wire communication .

Q: How do I wire the DS18B20 to the adapter?

Connect the sensor’s DATA wire to terminal A, VCC to terminal B, and GND to terminal C . Tighten the terminal screws to secure the connections.

Q: What voltage does the adapter support?

The adapter operates at 5V DC and is compatible with 3.3V systems . Verify your microcontroller’s logic level matches the sensor requirements.

Q: Is the adapter waterproof?

No. The pluggable terminal and PCB are not waterproof. For wet environments, house the adapter in a dry enclosure.

Q: Can I use this adapter with multiple DS18B20 sensors?

Yes. Each DS18B20 has a unique 64-bit address, so multiple sensors can share the same data pin. Connect each sensor’s DATA wire to the same terminal A, and use the DallasTemperature library to address them individually.

Q: What is the maximum current the adapter can handle?

The DFR0055 supports up to 1000mA, far exceeding the needs of a DS18B20 sensor .

Q: Does the adapter come with a cable?

Some kits include a 3-pin sensor cable, but verify your specific product listing. The adapter itself provides the terminal block and onboard pull-up resistor.

Q: Can I purchase in bulk for a product development project?

Yes. This adapter board is suitable for bulk purchasing by educational kit manufacturers, sensor network integrators, and HVAC product developers.

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