| Type | Principle | Voltage | Output | Use Case |
|---|---|---|---|---|
| Float Switch | Mechanical buoy | 5–24V DC | Digital (ON/OFF) | Liquid level detection (tank high/low) |
| Ultrasonic Level | Time-of-flight | 3.3–12V DC | Analog/Pulse | Non-contact, precise distance |
| Capacitive Level | Dielectric change | 3.3–5V DC | Analog/Digital | Any liquid, sealed containers |
| Optical Level | IR refraction | 3.3–5V DC | Digital | Point-level, small volume |
Note: Choose float for simple ON/OFF; use ultrasonic or capacitive for analog measurement.
您可以尝试使用以下方式获得更精确的搜索结果：