P/N IM-520/MH Rev. E
2
© 2017 Johnson Controls. All rights reserved. All specifications and other information
shown were current as of document revision date and are subject to change without notice.
FIGURE 1
Sound Test:
The 520/MH notification devices incorporate a method to allow the installer to perform a 5
second temporal 3 db sound level test. The test can be performed without activating an
alarm on the programmed zone(s). To initiate the test hold a magnet up to the face of the
appliance at the test position shown in figure 4 for approximately 5 seconds. There is a
small dimple in the plastic on the cover to help find the test position. When activated, the
test will produce the temporal 3 pattern for 5 seconds to allow a db sound output
measurement to be obtained at the desired location. This test can be performed without the
unit being enrolled into a panel or in a network making for a good tool for pre-installation
testing.
Loud/Norm jumper (520 only):
The model 520 has an optional loud setting of the sound level output. The J8 jumper can
be selected for either norm or loud sound dBA output. The loud setting will increase the
sound output approximately 1.5 dBA from the norm setting. This additional sound output
level can be used where marginal or inacceptable sound dBA readings are obtained in an
area. This boost in sound output could result in required sound levels being achieved in lieu
of adding additional sounders or relocation. For the best battery life always leave the J8
jumper in the norm position.
