Abus RWM450 User Manual - Important Note:

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(by a gentle downward pull) and 

stored in a safe place. Do not forget 

to fit the unit back onto the magnetic 

holder (III) when the work is 

completed!

IMPORTANT NOTE:

Only when the unit is situated in its 

intended location, clean, undamaged 

and activated, can it perform its 

potentially life-saving function of 

warning against fire.

TESTING, MAINTENANCE AND SERVICING

This smoke alarm automatically tests 

its functional readiness once every 

minute. It automatically adjusts the 

sensitivity of its detection optics 

according to the prevailing 

environmental conditions. If the 

energy reserves of the smoke alarm 

are depleted or the detection optics 

are so contaminated that it can no 

longer adjust its sensitivity to the 

conditions, the device indicates this 

situation at an early stage so that you 

have suffi- 

cient time to replace the smoke alarm 

with a new unit.

You should ensure that the air inlets 

around the sides of the smoke alarm 

never become constricted by dust, 

dirt, paint or adhesive tape, etc.  

To check that the device is fully 

functional you should regularly (at 

least once per month) test the alarm. 

To do this, press the Test and Stop 

button (Fig. 1, IV) to trigger a test 

Trigger  

test tone

Fig. 5

Fig. 6

Stop: temporarily 

deactivate or 

silence alarm.