© 2018 UTC Fire & Security Americas Corporation, Inc.
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P/N 1069821 (ML) • REV E • ISS 23OCT18
DC108 Series Magnetic Contact Installation
Sheet
EN SV
1
2
3
EN: Installation Sheet
Description
The DC108 series are surface mounted magnetic contacts that
can be connected to a burglar alarm system. The DC108
series can be used on ferromagnetic and non-ferromagnetic
environments and doors. For differences in the DC108 series
see
“Specifications” below.
Mounting
No special mounting tools are required.
The magnetic contact and the magnet are to be mounted
parallel to each other and with the text facing the same
direction using screws.
During installation the switching distances have to be
individually determined for each contact.
When the installation is completed, the electrical switch
function of the magnetic contact must be checked (for
example, with a continuity checker or multimeter). Use of
mechanical force, for example when installing, can damage the
glass body of the reed switches.
Notes
•
The X direction bias is not certified for use on any type of
material. See Figure 3.
•
When installing the contact please keep in mind that the
doors can bend under temperature influence.
UTC recommends to check regularly that the magnetic contact
is working properly on the control panel and that the installers
advise their customers to do this.
Wiring description
See Figure 2.
#
Colour
Description
(1) 2X Silver, labeled as
supervised loop
Tamper, supervision line
(2) 2X Silver
Alarm, normally closed (DC108)
(3) 2X Silver
Alarm, normally closed (DC108R4.7)
Package content
•
1X Magnetic contact
•
1X Magnet
•
4X Screws
•
2X Plugs
Specifications
Cable length
2.5 m
Switch close resistance:
DC108
DC108R4.7
<2
Ω
4.7 kΩ ±10%
Switch open resistance:
DC108
DC108R4.7
>10 MΩ
9.4 kΩ ±10%
Mounted on non-ferromagnetic material
Approach distance Y (switch close)
74 mm ±30%
Removal distance Y (switch open)
81 mm ±25%
Approach distance Z (switch close)
95 mm ±30%
Removal distance Z (switch open)
100 mm ±30%
2
50.8 m
in.
3.5 in.
88.9 mm
1.5
38.1 mm
in.
0.43
11 mm
in.
2.25
57.1 mm
in.
1.5
38.1 mm
in.
4K7
(1)
(2)
(3)
4K7
Y
Z
X
