LHS Cable

A Linear Heat Sensing Cable is a digital heat detection system that detects fire by monitoring temperature continuously along its entire length. When a preset temperature is reached, the cable triggers an alarm, making it ideal for early fire detection in high-risk and harsh environments.

LHS cable consists of two twisted, polymer-insulated conductors. When the surrounding temperature reaches the rated alarm temperature, the insulation melts at that point, allowing the conductors to short circuit and signal a fire condition to the fire alarm panel or monitoring module.

PATOL Linear Heat Sensing Cables are widely used in:

• Cable trays & tunnels

• Conveyor belts

• Power plants & substations

• Battery rooms

• Warehouses & cold storage

• Solar power plants

• Parking garages

• Oil & gas facilities

• Escalators & elevator shafts

Linear Heat Sensing Cable is preferred where smoke detectors are unreliable due to:

• Dust, moisture, steam, or fumes

• High ambient temperatures

• Outdoor or semi-outdoor installations

LHS cables offer point-specific detection, minimal false alarms, and require very low maintenance.

PATOL LHS cables are available in multiple alarm temperature ratings, typically ranging from:

• 70°C (datasheet)

• 90°C (datasheet)

• 105°C (datasheet)

• 178°C (datasheet)

The correct rating depends on ambient temperature and application risk.

No. LHS Cable is a digital (non-resettable) detection system. Once activated at a fire point, the affected cable section must be identified and replaced, ensuring precise fault location and system reliability.

Yes. Linear Heat Sensing Cable can be integrated with:

• Conventional fire alarm panels

• Addressable fire alarm systems

• Fire alarm control modules

• Dedicated LHS interface modules

Fire Knock provides complete integration support for the Linear Heat Detection System.

Linear Heat Sensing Cables are manufactured in compliance with international fire detection standards, making them suitable for use in industrial, commercial, and infrastructure projects. The cable is approved under the UL Standards (UL certificate)

Installation is simple and flexible:

• Mounted using clips, ties, or trays

• Can follow cable routes, conveyor belts, or equipment

• No complex calibration required

Proper spacing and routing are designed as per site conditions and fire risk analysis.

The maximum length depends on:

• Cable model

• Interface module used

• Fire alarm panel compatibility

Fire Knock assists in system design and zoning calculations to ensure compliance and performance (CONTACT: RAHUL ASHER - +91-9867064498)

Yes. Linear Heat Sensing Cable (LHS Cable) is designed to withstand:

• High humidity

• Dust and corrosive environments

• Wide temperature variations

It is suitable for both indoor and outdoor installations.

LHS Cable requires minimal maintenance, typically:

• Periodic visual inspection

• Continuity testing during scheduled fire audits

There are no moving parts, making it highly reliable

Selection depends on:

• Ambient temperature

• Risk category

• Installation environment

• Fire alarm system type

Fire Knock provides application-specific technical guidance to ensure correct selection.

Yes. Fire Knock is an authorized distributor of PATOL Limited Products like Linear Heat Sensing Cable, Infrared Detector, etc in India, offering:

• Genuine products

• Genuine products

• System design assistance

• Timely delivery

You can:

• Contact Fire Knock through the website or contact Mr. Rahul Asher - +91-9867064498

• Request a datashee

• Share your application details for a customized solution

Our technical team will assist you end-to-end.

Yes. LHS (Linear Heat Sensing) cable and LHDC (Linear Heat Detection Cable) refer to the same type of fire detection technology.

The difference is only in terminology:

• LHS cable emphasizes the sensing function

• LHDC cable emphasizes the detection function