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MZX Fire detection system 

602SB

Fixing instructions  Doc. version 5.0

3/6

Installation to a Flat 
Surface or Electrical 
Backbox

To install a sounder base, proceed as follows:
1 Feed the detection circuit wiring through the 

mounting flange cable entry.

2 Secure the mounting flange to either an elec-

trical backbox or a flat surface as required.

3 Feed the detection circuit wiring through the 

sounder base cable entry, then clip the 
sounder base to the mounting flange.

4 Wire the sounder base as shown in Fig. 2 

ensuring correct polarity.

Fig. 3: 602SB Sounder Base

Tone selection switches

Volume adjuster (clockwise to increase)

Volume trimmer tool

CAUTION

Do not fill the sound gap between the 
mounting flange and the sounder base.

LPCB approval

For LPCB approval, detectors and caps 
must be locked into the sounder base 
using a locking device (Factory fitted). 
Ensure that the locking device is in place 
before fitting a detector or cap. See Fig. 
5.

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