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Panasonic Electric Works Fire & Security Technology Europe AB 

 

Citadellsvägen 23, SE-211 18 Malmö, Sweden 

Tel: +46 (0)40 697 70 00 • Fax: +46 (0)40 697 70 99 

info@mfstech.com • www.panasonic-fire-security.com 

 

Fire alarm systems 

Multi detector 

4350 

 

Low profile design / Unleaded soldering / Latest IC technology 

 

One detector housing, two detector types and AI function 

General 

This low profile multi detector contains one 
photoelectric (optical) smoke detector and 
one heat detector within one housing.  The 
latest IC technology is used to secure the 
highest reliability possible. 

In the 

smoke

 detection chamber is a high-

efficient optical system consisting of an 
LED and a photodiode with two lenses.  
Scattered light (i.e. reflection of infrared 
light) is used to detect smoke.   

The 

heat

 sensing element is a thermistor. 

Reduces false fire alarms 

The smoke enters the detection chamber 
through an insect filter and an optical 
labyrinth.  This construction not only 
improves the smoke inflow but it also causes 
steam, fog, etc. to condense into moisture on 
its surfaces, to prevent false (nuisance) 
alarms.   

The detector maintains a constant sensitivity 
regardless of the contamination.  It has also 
a self diagnosis of the internal devices. 

AI function 

 

Combined heat and smoke sensing

 will 

guarantee reliable and accurate fire alarm 
detection. 

 

Variable delay function

, i.e. the delay 

time before fire alarm is activated, is 
influenced by temporary changes of the 
temperature and the smoke obscuration. 

 

Learning function / condition

 means 

that the detector will adapt an alarm  

algorithm according to the smoke and/or 
temperature conditions where the 
detector is located, i.e. temperature 
changes and occurrence of smoke.  There 
is a normal algorithm (default) and there 
are less and more sensitive learning 
conditions (algorithms) that will be 
adapted after a learning period.  If the 
conditions changes, the normal will be 
adapted again. 

Environment friendly 

The detector has unleaded soldering

.  The 

latest IC technology reduces the number of 
semiconductors and other electronic 
components to a minimum. 

Compatibility 

The conventional multi detector 4350 is the 
best substitute for the ionization smoke 
detectors 2316 and 2317. 

Miscellaneous 

The detector is plugged in a conventional 
base (2324), connected to a conventional 
zone line input.  The base has an LED that 
will light when the detector goes into alarm. 
In the base there are terminals to connect an 
external LED 2216 / 2217. 

Product applications 

The detector is intended for indoor use and 
in dry premises.  It is excellent to detect all 
types of fires, also a methylated spirits fire. 

Used in the systems

 EBL500

 / 512 / 128 / 

1000 / 2000.  

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