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LFL11 Leak Detection and Location Controller is designed for real‑time monitoring of liquid leakage conditions. It supports a monitoring range up to 150 m. Once liquid leakage is detected, the controller immediately triggers an alarm, accurately locates the leakage point, displays the leak location on the screen, and activates the relay output. The controller provides relay contact outputs and an RS485 interface, enabling integration with various monitoring systems for remote alarms and remote device control. LFL11 is suitable for IDC rooms, data centers, smart buildings, libraries, museums, warehouses, and other applications.
Accurate positioning, enabling leak detection over a maximum distance of 150 m
Multiple alarm functions with intuitive LED indicators displaying device status
High‑definition display for parameters, supporting RS485 communication and device linkage control
Industrial‑grade components with strong interference resistance DIN rail installation, and easy wiring
| Sensing Performance | Detection Distance | 150m |
| Response Time | 8‑15 s | |
| Detection Accuracy | ±0.5m + 1% | |
| Reading Resolution | 0.1m | |
| RS485 Interface | Communication Protocol | MODBUS‑RTU |
| Bus Address | 1‑255, Default 1 | |
| Baud Rate | 1200, 2400, 4800, 9600 (Default), 19200 bps | |
| Data Format | N,8,1 | |
| Relay Output | Contact Type | Dry Contact, 1 set, supports Normally Open (NO) and Normally Closed (NC) |
| Rated Load | 30VDC / 3A, 250VAC / 3A | |
| Environmental Conditions | Operating Temperature | -15‑50 °C |
| Operating Humidity | 0‑95% RH (Non‑condensing) | |
| Power Supply Requirements | Supply Voltage | DC 9‑30 V wide voltage supply, DC 12 V recommended. |
| Power Consumption | <2W | |
| EMC Protection | Electrostatic Discharge (ESD) | Contact discharge: ±4 kV; Air discharge: ±8 kV |
| Surge | ±1 kV | |
| EFT | ±2 kV | |
| Weight | 129.86 g | |
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