LM35DZ Waterproof Analog Temperature Sensor Probe (-55 to 150 C)
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Prices updated: 13 Oct 2026
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About this product
The LM35DZ waterproof probe is a sealed analog temperature sensor built around the LM35 precision IC, which outputs a voltage linearly proportional to temperature in degrees Celsius. The probe is about 6 mm in diameter and 30 mm long, with a cable roughly 6 feet long, which suits measurements in wet environments. It is often used with Arduino and other microcontroller boards.
Specifications
- Sensor type
- LM35 analog temperature IC in sealed probe
- Output
- Analog voltage, 10 mV per °C
- Supply voltage
- 3.3 V to 5 V
- Temperature range
- -55 °C to +150 °C
- Accuracy
- ±0.5 °C from -10 °C to +85 °C
- Probe size
- About 6 mm diameter x 30 mm long
Frequently asked questions
How do I convert the LM35DZ output to temperature?
The LM35 outputs 10 mV per °C, so the temperature in °C equals the output voltage in volts multiplied by 100. On a 5 V, 10-bit ADC such as an Arduino's, temperature = analogRead() × 5 / 1023 × 100.
How should the probe be wired?
The probe has three conductors for supply, ground and analog output. Connect the supply within 3.3 V to 5 V, ground to the common ground, and the output to an analog input pin. Confirm the wire colours in the datasheet or product documentation.
