REDARC LCA1224 Low Coolant Alarm 12V 24V Radiator Level Warning System

REDARC low coolant alarm designed to monitor radiator coolant level in 12V and 24V systems.

Provides early warning of coolant loss to prevent engine overheating and damage.

The REDARC LCA1224 is a coolant level monitoring system that alerts the driver when coolant drops below a safe level.

 

It works by using a probe installed in the radiator or header tank. When coolant level falls, the system triggers:

 

• Audible alarm (buzzer)
• Visual warning (LED or external light)

 

 

This gives immediate warning of issues such as:

 

• Burst radiator hose
• Sudden coolant loss
• Low coolant level

 

 

Unlike relying on a temperature gauge, this system detects coolant loss before overheating occurs, helping prevent major engine damage. 

 

 

 

 

Key Features

 

 

• Suitable for 12V and 24V systems
• Audible and visual alarm
• Anti-slosh delay to prevent false alarms
• External outputs for additional buzzer or warning light
• Low standby current (<2mA)
• Compact design

 

 

The anti-slosh delay prevents the alarm from triggering during cornering or movement when coolant shifts in the tank. 

 

 

 

 

What it actually does (real-world)

 

 

This is protection against:

 

• Sudden coolant loss at highway speed
• Hose failures in remote areas
• Overheating before you even see the temp gauge move

 

 

It gives you time to:

 

• Pull over
• Shut the engine down
• Avoid head damage

 

 

 

 

 

Installation notes

 

 

• Probe must be installed in radiator or pressurised part of system
• Typically drilled and fitted into header tank
• Wired to ignition power and ground
• Can run external buzzer/light if needed

 

 

Proper installation is critical for correct operation.

 

 

 

 

Common Questions

 

 

Is this better than a temp gauge?

Yes for sudden coolant loss — temp gauges react too late.

 

Does it work on all vehicles?

Yes — suits most petrol and diesel engines (12V/24V systems).

 

Will it go off all the time?

No — built-in delay prevents false alarms from coolant movement.

 

Is it worth it?

For touring or remote driving, yes — it can save an engine.

Protect your engine from costly damage with the Redarc LCA1224 Low Coolant Alarm.

Designed to alert you to sudden coolant loss or gradual coolant level drops, this unit is ideal for 4WDs, trucks, buses, and heavy machinery running either 12 or 24-volt systems.

 

Key Features:

 

• Dual voltage compatibility – suits both 12V and 24V systems
• Visual and audible alerts for low coolant levels
• Prevents engine damage due to overheating or coolant loss
• Universal fitment – can be installed in a wide range of vehicles
• Reliable solid-state design for long-term durability

 

 

Applications:

Perfect for off-road vehicles, mining equipment, long-haul trucks, RVs, and any application where early warning of coolant issues is critical.

 

Included in the kit:

 

• LCA1224 module
• Buzzer
• LED indicator
• Sensor probe
• Installation hardware and instructions