Amphenol Advanced Sensors LET-Basic Alarm Module

Introduction

The Amphenol Advanced Sensors LET-Basic is a leak detection alarm module designed to monitor water leak detection cables and provide immediate local and remote alarm notification. It is suitable for installations where early detection of water intrusion can help protect equipment, infrastructure, and critical facilities.

Part Description

The LET-Basic Alarm Module is a water leak detection controller that supports sensing cable runs up to 500 meters long. It provides adjustable sensitivity to help tailor detection performance to the environmental conditions and installation requirements.

When a leak is detected, the module can activate automatic-reset alarm outputs, an audible buzzer, and relay indicators. Its RS485 MODBUS communication capability enables integration with building management systems, industrial controllers, and centralized monitoring platforms.

The module operates from a 12 VDC to 24 VDC/AC supply, making it compatible with many low-voltage control and automation installations.

Key characteristics include:

• Water leak detection controller
• Supports detection cable lengths up to 500 meters
• Adjustable leak sensitivity
• Automatic-reset alarm outputs
• Integrated buzzer indication
• Relay output for external alarms or controls
• RS485 MODBUS communication interface
• 12 VDC to 24 VDC/AC operating supply
• Designed by Amphenol Advanced Sensors

Applications

Potential applications for the LET-Basic Alarm Module include:

• Monitoring under raised data-center floors
• Detecting leaks near HVAC and cooling equipment
• Protecting server rooms and communications closets
• Monitoring pipe runs and plumbing infrastructure
• Detecting condensate pan overflow
• Monitoring battery rooms and UPS installations
• Leak detection around water treatment equipment
• Protecting electrical switchgear rooms
• Monitoring mechanical rooms
• Supervising laboratory equipment and fluid handling areas

Industries

The LET-Basic can be used in a variety of industries, including:

• Data centers and telecommunications
• Commercial buildings and facilities management
• Industrial automation
• Manufacturing
• Healthcare and hospitals
• Pharmaceutical production
• Laboratories and research facilities
• Water and wastewater treatment
• Energy and utilities
• Transportation infrastructure
• Financial and enterprise IT facilities

Usage Ideas

1. Data Center Underfloor Leak Monitoring

Install leak detection cable beneath a raised floor and connect it to the LET-Basic module. Use the relay output to activate a local warning light while reporting alarms through MODBUS to the facility management system.

2. HVAC Condensate Protection System

Place sensing cable around air-handling units, cooling coils, condensate drains, and drip pans. Configure the module sensitivity to detect standing water before an overflow damages nearby equipment.

3. Remote Mechanical Room Alarm Network

Deploy LET-Basic modules in multiple mechanical rooms and connect them to an RS485 MODBUS network. A central controller can monitor alarm status across the facility and notify maintenance personnel when a leak occurs.

Conclusion

The Amphenol Advanced Sensors LET-Basic Alarm Module is a practical solution for water leak monitoring in critical and general-purpose facilities. With support for long sensing cable lengths, adjustable sensitivity, automatic-reset alarms, relay outputs, audible indication, and MODBUS communication, it can serve as a dependable component in local and networked leak detection systems.