DS18B20 Digital Temperature Sensor Probe with 3M Waterproof Cable - 7Semi

📌 Overview
Sensor Type: Digital temperature sensor with waterproof stainless‑steel probe.
Brand/Model: 7Semi DS18B20 series with 3 m waterproof cable.
Interface: Uses 1‑Wire digital protocol — only one data line needed for communication with microcontrollers.
Compatibility: Works with Arduino, Raspberry Pi, ESP32, STM32, and other 3.0 V–5.5 V systems.
🔧 Key Features
Waterproof Probe: Stainless steel, corrosion‑resistant probe suitable for wet environments and outdoor use.
Long Cable (3 m): Flexible placement even for remote sensors (e.g., tanks, pools, outdoor setups).
High Precision: Measures temperature accurately with typical ±0.5 °C precision (especially from –10 °C to +85 °C).
Wide Temperature Range: Operates approximately from –55 °C up to +125 °C.
1‑Wire Digital Output: Simplifies wiring — only a single data wire plus power and ground.
Multiple Sensors on One Line: Each DS18B20 has a unique 64‑bit ID, allowing many sensors on the same data line.
Selectable Resolution: Can be configured from 9‑bit to 12‑bit resolution for more precise readings.
🧠 Technical Specifications
Operating Voltage: 3.0 V to 5.5 VDC — compatible with most microcontroller systems.
Output: Digital temperature values via 1‑Wire protocol — no analog conversion needed.
Cable: 3 m waterproof‑rated cable for distance applications.
Accuracy: ±0.5 °C within typical range (–10 °C to +85 °C).
Probe Material: Stainless steel for ruggedness and corrosion resistance.
Temperature Range: –55 °C to +125 °C for broad environment sensing.
🧪 How It Works
Powered from 3.0 V–5.5 V supply (VCC and GND).
The 1‑Wire DATA line connects to a microcontroller digital pin with a 4.7 kΩ pull‑up resistor (required for stable communication).
The microcontroller requests temperature readings; the sensor returns digital values via the one‑wire bus.
📌 Typical Uses
This waterproof DS18B20 probe is suitable for professional and hobby applications such as:
Outdoor weather stations and environmental monitoring
Aquarium, pool, hydroponic, or other water temperature sensing
IoT projects and smart farming systems
Industrial temperature monitoring
HVAC systems and home automation
Soil temperature sensing and greenhouse control
⚠️ Notes / Tips
Waterproof Only Probe: The probe and cable are waterproof, but the microcontroller connection and pull‑up resistor should be protected from water.
Multiple Units on One Wire: You can connect multiple DS18B20 sensors in parallel on one data line (unique IDs differentiate them).