Coronavirus update

Following the recent covid-19 announcement regarding the closure of non-essential businesses, we would like to reassure our customers that as suppliers of essential emergency equipment to the healthcare sector, we are still open for business.

While our aim is to continue to provide an uninterrupted service, we will continue to monitor the ever changing situation while taking all necessary steps to ensure the wellbeing of both our staff and customers.

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Cavius Smoke Alarms


Marsden Fire safety are pleased to be supplying the new range of Cavius smoke, heat and flood detectors in the UK.

This range of devices are the worlds smallest smoke and heat alarms measuring in at a tiny 40mm.

Every alarm is 100% calibrated, sensitivity tested and sound level tested, meaning there will be NO false alarms and fail proof activation.

Cavius smoke alarms combines state of the art electronics with superior product design to produce the world’s smallest photoelectric smoke alarms and thermal heat alarms, with a 10year battery life.

Following a survey to find out what people found most annoying about smoke alarms it was found to be battery's running out, mainly at night when you have no real means of changing them. However with Cavius range the 10year battery life is a massive improvement on the normal 12-18 months you get from a standard alarm.

Once they are installed with the unique and simple “Smart Clip” ceiling mechanism, the battery is activated. They have an audio alert output of 85dB(A) at 3 metres, generating a piercing alarm designed to wake you from your sleep.

CAVIUS devices have a 30 day low battery warning, increasing your chances of identifying that your smoke alarms need to be replaced.

Due to the size being the same as a golf ball, means they can be placed in every room with out the unsightly look of a standard alarm.


10 year long life battery (sealed)
 A penetrating sound at 85dB at 3 metres
 Intelligent test and 10 minute hush button
 30 day low battery warning
 Unique smart clip ceiling mechanism
 Easy installation
 Environmentally friendly
 EN14604- UK