The photoelectric level switch uses optical sensors to control switching and manage liquid levels.
This switch operates with infrared detection, relying on the principles of light refraction and reflection. When the liquid is at a high level, it creates a boundary interface between the liquid and the photoelectric switch. When the liquid is at a low level, the boundary interface shifts to the air and the photoelectric switch. These interfaces result in varying light reflection intensities received by the internal photodetector, corresponding to different switch states.

Product Features
Housing Material Options: Available in various acid and alkali resistant materials, enhancing your durability.
Compact design: Its small size allows installation in small spaces, making it easy to assemble and saving time.
High Accuracy and Repeatability: Ensures accurate and consistent switch activation.
LED Alarm Indicator: The built-in LED shows the alarm status; when lit, indicates that the output is activated.
Technical Parameters
Working Pressure: ≤1MPa
Operating Temperature: -20~80℃
Power Voltage: 5-12VDC/10-28VDC (±5%)
Power Current: 500mA
Output Type: NPN, PNP and Switching Output Types
Available Materials: PC, Brass, Polysulfone Resin, SUS304
Applicable medium: Oil, wastewater, aqueous solutions, wine, alcohol, etc.
Cable Length: 20AWG PTFE Cable, 250mm, with 8mm Tin Wire
Connection Method: G tube threads, NPT tapered threads, M and SAE threads (with O-rings)