User's Manual

Expansion Transceiver Module (EXT)
Installation Instructions
Sequel Technologies, LLC
General Description
The Expansion Transceiver Module (EXT) adds bidirec-
tional wireless communication between the ST Express
and ST8 security systems and wireless sensors. Using
unique duplex frequency diversity, the EXT transmits
and receives narrow-band radio signals on two sepa-
rate frequencies, providing enhanced reliability when
compared to competitive systems. When used with an
ST8 security system the EXT can be installed in either
the control panel or an LCD keypad to function as the
master system transceiver. The EXT can also be used in
client mode to convert the LCD into completely wire-
less operation. In addition, the EXT includes a protocol
decoder, which allows it to receive signals from select
GE and Honeywell wireless sensors, as well as the entire
line of Sequel wireless sensors and devices.
Additional Information:
500 feet open air wireless range
Included in the ST Express system
Optional with the ST8 system
One master EXT per panel, located either in the
control panel or in an LCD keypad (ST8 only)
Can be installed in an LCD keypad
Transmits and receives on two separate frequencies
(319.5 MHz and 345 MHz)
Status LED that indicates that a valid transmission
was received from a sensor
Compatible with select Honeywell and GE wireless
sensors
Mounting the EXT in the ST8 Panel
Carefully snap the plastic mounts (included with the
EXT) into the appropriate mounting holes on the
control panel.
Align the EXT with the plastic mounts and header
pins on the control panel. Gently press downward
until the EXT secures on to the plastic mounts and
header pins.
Insert screws into the plastic mounts and turn to
secure the EXT.
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Figure 1: Mounting the EXT in the ST8 Control Panel
Using the EXT with an LCD Keypad
The EXT transceiver module can be mounted in a LCD
keypad and can operate in one of two modes: Client
(Wireless) mode or Host (Wired) mode.
Host (Wired) Mode
In Host mode, an EXT transceiver mounts in a LCD
keypad instead of the control panel and functions as
the master EXT for the entire system. The transceiver
receives wireless signals from wireless sensors or cli-
ent transceivers and sends this data to the control panel
via the keypad’s 4-wire bus connection. The ST system
supports only one master transceiver at a time, either in
the control panel, or in a one of the LCD keypads. The
following conditions apply when using Host mode:
Host mode allows the keypad to continuously
display system status.
The keypad is connected to the four-wire data bus
and receives power from the control panel.
Client (Wireless) Mode
In Client mode, the EXT transceiver mounts in a LCD
Keypad allowing the keypad to become a fully func-
tional wireless LCD keypad that communicates with the
master EXT. A user-replaceable battery provides power
to the keypad. The installation of batteries in the keypad
automatically puts the keypad in wireless mode. The fol-
lowing conditions apply when using Client mode:
The battery life is approximately two years based on
an average of two minutes of use per day.
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EXT
Transceiver
3 holes
for plastic
mounts
Slide EXT on to header pins
1