DS18B20 Waterproof Temperature Sensor with Stainless Steel Probe

The DS18B20 waterproof temperature sensor combines a digital 1-Wire interface with a sealed stainless steel probe, making it suitable for measuring temperature in liquids and harsh environments where standard sensors would fail. The probe houses a genuine DS18B20 chip that reports temperature over a wide range of -55°C to +125°C with selectable 9-bit to 12-bit resolution, allowing the user to balance precision against conversion time. Communication takes place over a single data line, so only three wires are required: red for power (3V to 5V DC), black for ground, and yellow for data. Because each DS18B20 has a unique 64-bit serial code, multiple sensors can share the same 1-Wire bus without address conflicts, which simplifies multi-point temperature monitoring in distributed systems. The stainless steel sheath protects the sensing element from water, corrosion, and mechanical damage, while the 108 cm cable provides enough reach for aquariums, water tanks, and industrial enclosures. This digital temperature sensor is commonly used with Arduino, STM32, and other microcontrollers in thermostat control, water heater regulation, and environmental monitoring projects. The combination of a waterproof probe, digital output, and wide temperature range makes it a practical choice for both hobbyist and industrial temperature-sensing applications.