---
title: How to select the right sensor?
description: "Choosing between: inductive sensors, capacitive sensors, photoelectric sensors, ultrasonic sensors"
---

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# How to select the right sensor?

## Choosing between: inductive sensors, capacitive sensors, photoelectric sensors, ultrasonic sensors

Various technologies can be used for detecting metallic objects depending on the application area:

1. **Inductive sensors** for detecting all metallic objects at close range (< 50 mm).
2. **Capacitive sensors** for detecting the presence or level of almost any material and liquid at close range (< 50 mm).
3. **Photoelectric sensors** in diffuse, retro-reflective or through-beam technology for detecting virtually any object over great distances (> 50 mm) using light.
4. **Ultrasonic sensors** for detecting virtually any object over greater distances (> 50 mm) using sound.

 

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