User's Manual

Door/Window Sensor (DWS)
Installation Instructions
Sequel Technologies, LLC
General Description
The Wireless Door/Window Sensor (DWS) is a dual
input door/window sensor developed for use with the
ST security systems. The DWS can be tripped by using
either of the two built in reed switches and/or in con-
junction with a normally closed external contact. The
sensor achieves enhanced wireless reliability using
unique duplex narrow band frequency diversity, which
transmits and receives radio signals on two separate
frequencies.
Additional Information:
For UL installations, an external contact may not be
more than 3 feet from the transmitter.
A built-in cover tamper switch is activated when the
cover is removed.
The DWS is powered by a 3-volt lithium battery,
which can power the transmitter for up to 5 years.
Each transmitter has a unique factory-programmed
code that distinguishes itself to the receiver.
Built-in reed switches will close if the magnet is
within 1/2” (12mm) of the sensor case.
The DWS is compatible with any N/C hardwired
external contact.
Figure 1: Mounting Base
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CASE LOCKING TABCASE LOCKING TAB
1/2” Max.1/2” Max.
WIRE ENTRY POINTWIRE ENTRY POINT
Figure 2: DWS Circuit Board
Installation
Select a sensor location. Avoid mounting the sensor
near the floor. For door mounts, mount the magnet
to the door and the sensor to the door frame.
Remove the sensor cover. Pull back on the plastic tab
to release the circuit board from the mounting base.
Remove the circuit board from the mounting base.
Mount the sensor base to the door or window frame.
Use included screws to affix the mounting base,
observing alignment marks shown in Fig 1.
If using external contacts, proceed to step 7.
Remove the magnet from its base by inserting a
small screw driver into the slot at the end of the
magnet cover. Push in and twist to remove the base.
Mount the magnet base within 1/2” of the sensor base.
(For external contacts only). Mount the external
contact as described in its instructions. For recessed
wiring, drill an access hole for the wire.
(For external contacts only). Connect two wires
from the normally closed external contact to the
terminal strip on the sensor’s circuit board.
Snap the sensor and magnet onto their mounting bases.
Note: It is undesirable to mount the sensor or magnet
on a metal surface. If mounting on metal is unavoid-
able, use spacers (available from Sequel Technologies)
to reduce transmission problems.
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TAMPER SWITCHTAMPER SWITCH
REED SWITCHESREED SWITCHES
3.0 VDC BATTERY3.0 VDC BATTERY
TERMINALSTERMINALS
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