Photoelectric Water Leak Sensor with RS485 or Digital Output

#Overview

The EX-LC-S21 is designed for single-point liquid leakage detection in critical equipment areas. Unlike conductivity-based sensors, it uses photoelectric detection technology to identify liquid presence through optical signal changes, making it suitable for both conductive and non-conductive liquids.

It can be connected to BMS, PLC, monitoring platforms, alarm devices, or valve control systems through RS485 Modbus or digital switch output.

#Key Features

• Photoelectric detection for conductive and non-conductive liquids
• Detects pure water, deionized water, oil, alcohol, tap water, acid/alkaline liquid, gasoline, and antifreeze
• RS485 Modbus RTU version or NO/NC digital output version available
• DC9–30V wide voltage input
• IP68 waterproof design
• 1 mm floor-level leak detection accuracy
• Power and alarm indicator lights
• Automatic reset after liquid is removed
• Screw-fixed floor installation

#Applications

• Data centers and server rooms
• Cabinets, UPS areas, and raised floors
• Telecom base stations
• Power distribution rooms and electrical cabinets
• Air conditioning condensate leakage
• Pipeline and valve areas
• Tanks and containers
• Laboratories
• Chemical and semiconductor facilities

#Technical Specifications

#FAQ

Q1: Can this sensor detect pure water or deionized water?
Yes. The photoelectric detection principle allows it to detect pure water, ultrapure water, and deionized water.

Q2: What output options are available?
It is available with RS485 Modbus RTU output or NO/NC digital output.

Q3: Is it suitable for BMS or PLC integration?
Yes. The RS485 version can be connected to BMS, PLC, or other monitoring systems.

Q4: Does it need manual reset after leakage?
No. It automatically returns to normal status after the liquid is removed.