
Redcare Secure Mk3
Installation, Maintenance and Operation Manual
ModelSecMk3
Date: Jul 2013

July 2013 © British Telecommunications plc 2011
Table of Contents
INTRODUCTION 1
MOUNTING AND WIRING 3
PROGRAMMING 7
CONFIGURATION 16
SECURE IP 39
DISPOSAL 40
GLOSSARY OF TERMS 41
SUPPORT 42

July 2013 © British Telecommunications plc 2013
INTRODUCTION
Product Description
Figure 1 - Secure Mk3 unit
The BT Redcare secure Mk3 unit is a Dual path alarm signalling unit for transmitting alarm
signals from a customer’s alarm panel, via the BT Redcare ESP network to an Alarm receiving
Centre (ARC). The unit can be used in the GPRS/PSTN configuration for “BT Redcare secure
2/3” service, or the IP/GPRS configuration for “BT Redcare Secure IP” service.
The unit communicates via the BT Redcare Enterprise Services Network (ESP) and a valid TA
account must exist for the unit to communicate. The TA account will have been populated with
the serial number of the unit.
The unit has 16 general purpose alarm inputs, and 3 outputs, making it suitable for connection
to most common alarm panels.

July 2013 © British Telecommunications plc 2013
The unit is supplied already fitted with a BT Redcare enabled SIM card and is pre-configured
to give GPRS connectivity.
The unit is supplied pre-configured to connect to the BT Redcare network servers over PSTN
0800 dial up numbers or through IP tunnelled networking.
Specifications
Size: 119mm X 158mm X 28mm.
Power: 9V – 30V
Current:
When an Ethernet connection is made to the unit then the current will be higher. (i.e. a
GPRS/PSTN unit that has Ethernet connected for the purpose of accessing the web console
will typically have similar current draw to that of an IP/GPRS unit.
The above table assumes no add on daughter boards.
Alarm inputs: 16 General purpose inputs 1-16. (-0.5V – 30V)
Alarm threshold: High >2.5V +/- 0.02V, and Low <1.5V +/- 0.02V.
Outputs: 3 X transistor outputs. 50mA max (active low). Internal 10K pullup.
(Comms fail, RPS, CTRL)
RS232 port: remote panel access (UDL) to some panel types.
RS485 port: remote panel access (UDL) to some panel types.
Expansion bus: For add on modules i.e. Dial capture daughter board
Configuration: Using on board “Mode” and “Set” buttons, and or web console.
Processor: Microchip dsPIC33EP512MU810 16 bit processor.
Wireless module: Cinterion BGS2-E

July 2013 © British Telecommunications plc 2013
MOUNTING AND WIRING
Removal of cover
The top cover can be removed by inserting a screwdriver blade into the 6 slots at the top of the
unit, and levering the plastic outwards to release the 6 clips.
Regular access to the inside of the unit should not be required, although occasional access
may be required to access the SIM card, or to add a daughter board for additional facilities.
(i.e. dial capture board).
The unit supports all BT Redcare enabled SIM types. (BT Redcare O2 / BT Redcare BT
mobile / BT Redcare Roaming). The SIM type is auto detected by the unit without need for any
configuration change.
Mounting
The unit should be mounted inside the alarm panel, or inside a separate powered housing,
using the sticky mounting pads supplied.
The back of the unit also supports DIN rail mounting for housings that support this type.
The supplied aerial should be mounted on top of the outside of the housing by removing the
adhesive backing.
Figure 2 - Layout of Secure Mk3 terminals

July 2013 © British Telecommunications plc 2013
Connection terminals
The Screw terminal blocks for the alarm inputs, and other connections, are removable making
it easier to change out a unit should the need arise.
All terminal blocks are of the “Degson electronics” type, and suitable for use with a standard
3mm blade terminal screwdriver.
Figure 3 - Degson terminal Connectors
When fitting the terminal blocks, please ensure that they are fully seated to the circuit board.
Power connections
Power to the unit is via 2 screw terminals at the bottom left, with positive being nearest the
edge of the board. The supply voltage range is 9V to 30V. The unit is designed to be
connected to the Auxiliary power output on an associated alarm panel, or separate powered
enclosure. Ensure the power source is sufficient as per the power requirements in the
specification section. Te account at the alarm receiving centre (ARC) should be put “on test”
before power up, as signals will be sent following initialisation
Alarm inputs
The unit has 16 alarm inputs which are presented on screw terminals along the bottom of the
unit. These are labelled as Pin 1-16. The first 8 alarm inputs also each have 0V and a ‘pos
bus’ terminal associated with them. By default the 16 alarm inputs required a positive condition
to be presented to send an alarm. (Default = Positive applied). This can be changed using the
PL, P1 or P2 button menu. See later section on configuration.
The alarm input terminal blocks are 4 way with inputs 1 – 8 on the last 2 connectors of the first
4 blocks, and inputs 9 – 16 are consecutive on the last 2 blocks.
Pos Bus
There are 4 pos bus terminals presented on the first 4 alarm blocks. These terminals are
tracked together on the unit and can be used to provide more connection + points by wiring
the first to the positive supply as per fig 4. The Pos Bus is also tracked to the expansion
module sockets (J202 and J604) and may be further utilised with some future expansion
modules.

July 2013 © British Telecommunications plc 2013
Figure 4 - Utilising the Pos bus rail
Outputs
Three transistor outputs are provided on screw terminals at the top of the unit, and these have
an associated 0V terminal on the 4th connector on the block. The outputs are transistor driven
and use an internal 10K resistor to give the high state.
By default, output 1 is comms Fail, output 2 is CTRL, and output 3 is RPS. See the further
sections on outputs for a full explanation.
Serial data connections
RS232 TX & RX is also provided and RS485 A & B on another 4 way terminal block.
These ports allow serial alarm panel connection. See Panel Upload Download section.
PSTN connection
The telephone line connection is made to a 2 way terminal block at the top right of the unit.
The PSTN connection is not polarity sensitive. Connect the terminals to a standard PSTN line
that supports DTMF outgoing access.

July 2013 © British Telecommunications plc 2013
The PSTN connection is required for “BT Redcare secure 2” and “BT Redcare secure 3”
service.
If the telephone line carries ADSL (broadband) then an additional ADSL micro filter will
normally be required. Suitable hardwired ADSL micro filters are available from the BT Redcare
web shop. www.BT Redcare.bt.com
The unit is supplied pre-configured with the necessary 0800 telephone numbers to connect to
the BT Redcare network.
An additional 2 way block marked “Panel A B” allows for the PSTN line to be diverted out
through an onboard bypass relay for carrying out PSTN dial in panel UDL.
Note the “Panel A B” connection purely presents the PSTN out via the units bypass relay. This
is not a dial Capture connection.
Ethernet connection
The Ethernet port needs to be connected to a suitable Ethernet network for “BT Redcare
secure IP” service using CAT5 cable. For most IP installations, a standard Ethernet patch
cable can be used. The Ethernet port can also be used to connect to a local PC for advanced
unit configuration. This connection may require an Ethernet Crossover cable as the unit does
not auto detect cable type.
Aerial connection
Connect the supplied aerial to the MMCX connector on the top left of the unit. The aerial
should be placed in a position that receives the best wireless coverage for the GPRS network
being used. Carry out a survey with a signal strength tester to establish the best location.
If necessary, a selection of higher gain extension aerials can be purchased from the BT
Redcare web shop at www.btinstallershop.com

July 2013 © British Telecommunications plc 2013
PROGRAMMING
Programming Port
The programming port is used for upgrading the software on the unit using a USBNav
programming dongle, or analysing the units de-bugs information using a USB to TTL serial
cable (3V3).
See section on serial de-bug for further information.
Unit initialisation
At power up the unit will display its current software level on the display.
Figure 5
In the above example the display cycles 60 -41- 60 -11 -06 indicating that the software level is
K60P41A60P11 Release Candidate 06
The unit will then immediately attempt to connect to the BT Redcare platforms over the
configured paths. The unit will typically complete path establishment in the following times
from power up.
Figure 6 - time to commission paths after unit power up

July 2013 © British Telecommunications plc 2013
The unit sends a “Unit Restarted” event (pin 984,1) over the first available path, followed by a
“Unit restarted” restore (pin 984,3) within 2 seconds. The unit also sends the state of all 16
pins and the state of the PSTN voltage alarm and low Battery alarm. Sending these alarm
states at start up help to ensure that the ARC alarm handling software reflects the true state of
all pin alarms after start up.
Status displays
The unit clearly displays its status on the 2 X 7 segment LEDs. An additional green LED is
provided at the side of the Ethernet connector to indicate packet flow on Ethernet.
In its normal working state, the unit will cycle displaying the signal strength (SS), pins in alarm
state (AL) and Grade of service (Gd) in 1s steps. i.e. It will show “SS” followed by the received
wireless signal strength from 0 – 31. The display may also occasionally display 99 as the
signal strength if the unit’s Cinterion wireless modem is unable to determine the current signal
strength. For reliable GPRS operation the signal strength should be at least SS-12, or higher.
After the signal strength is displayed for 1s, the unit will then show “AL” followed by any alarm
inputs 1-16 that are currently in the alarm state. If no pins are in the alarm state, then it will
show AL followed by 00. The unit may also show Lb (low battery) if the supply voltage is below
the supply threshold, and t1 or t2 if test modes t1 or t2 are active.
After the alarms status is displayed for 1s, the unit will then show “Gd” followed by the Grade
of service i.e. Gd-04 for Secure IP, or Gd-02 for Secure 2 etc. The Grade of service can only
be determined by the unit while in contact with the ESP. The unit will not show Gd until at least
one path is commissioned and the polling rates can be retrieved from the ESP. The unit may
show Gd followed by - - if the polling parameters cannot be determined.

July 2013 © British Telecommunications plc 2013
Figure 7 - Signal strength chart

July 2013 © British Telecommunications plc 2013
Figure 8 - typical display cycling on a fully commissioned unit with a signal strength of
21, grade 04, and pin 4 in the alarm or open state.
Additionally “bL” (battery low), and t1 and t2 (test modes 1&2) may also be shown amongst the
“AL” listing.
Path Status
The state of the communication paths is indicated by the LED dots on the displays.
Figure 9 - Path status dots

July 2013 © British Telecommunications plc 2013
The dot on the left display indicates the status of the wireline path, and the dot on the right is
the status of the wireless path.
The dot will be off when the communication path is unavailable. It will flash when the unit has
obtained a suitable IP address during establishment, and will be steady on when the path has
been fully commissioned.
The dots will also briefly blink off when data is being passed over that link. i.e. each time the
unit is polled then a brief blink is seen on the associated path dot. Also alarm transmission will
be seen as a brief blink on the associated path dot.
When fully commissioned over both paths, then both dots should be on.
The meanings of the dots are somewhat similar to the path status LEDS on previous secure
units, and they also share some commonality with the dots on a BT Redcare 5G STU. The
mnemonic “Left Landline” helps as a reminder as per 5G STU.
Additionally, when representing the PSTN path, the left dot will blink to indicate “low PSTN
voltage” and rapid flash to indicate PSTN communication to the platform is in progress.
IP path to platform is not
established
GPRS path to platform is not
established
PSTN path has yet to
establish, or last attempted
PSTN call was unsuccessful
An IP address has been
obtained from the tunnel
server.
An IP address has been
obtained from the GPRS
Radius server.
PSTN is in the process of
dialling the platform
Rapid flashing
250ms on
250ms 0ff
PSTN call in progress and
data is exchanging with the
platform.
IP path now established to
the platform.
GPRS path now established
to the platform.
Last PSTN call attempt
successfully communicated
with the platform
Blinking flash
125 ms on
875 ms off
PSTN voltage has failed.
(<3.5V).
Polling or alarm data is
passing across the IP path
Polling or alarm data is
passing across GPRS path
Figure 10 - LED path status indicator dots

July 2013 © British Telecommunications plc 2013
Of the 16 alarm pin inputs, all behave as general purposes inputs with the following
exceptions.
Pin 4 has the RPS output associated with it. (See output 3 RPS)
Pin 11 acts as an ATS input as per the requirements of the BSIA form 175 document. This
applies only when output 1 is set to BSIA mode (F8 =1).
Pin 13 acts as an AC fail input and therefore has a default 7 minute delay before a pin 13
alarm is transmitted. It also has a 7 minute delay before a reset is sent. On presenting an
alarm condition to pin 13, the units display will show the alarm immediately (AL 13) but 7
minutes of constant alarm condition needs to elapse before transmission. Similarly, a pin 13
restore will immediately remove the AL 13 from the display, but 7 minutes of constant restore
condition needs to elapse before transmission of the pin 13 restore.
The 7 minute time delay can be configured through the web console by typing a new value 0-7
in the “Mains Fail delay” field. If the “Mains Fail delay” is set to 0, then pin 13 can be used as a
general purpose alarm input. (Subject to ARC acceptance).
Output 1
Output 1 acts as the communications fail output. The mode of operation can be selected
through the F8 button menu. (see config section)
By default output 1 acts as a BSIA form 175 output. (F8=1). This allows the alarm panel to
interrogate path faults as single path or dual path. That is, the output is normally low when
both paths are OK.
By default the output will switch high, following either path fail, once the relevant ‘debounce’
time has expired. (Defaults 2 minutes for IP, 15 minutes for GPRS and 15 minutes for PSTN)
If ATS input (pin 11) is toggled during the fail period, i.e. (panel interrogation) then output 1 will
either pulse low to indicate a single path failure, or remain high to indicate a dual path failure.
The unit also supports inverted mode BSIA175 operation by learning pin 11 to be positive
removed.
Output 1 and 2 also support galaxy mode. See galaxy mode section.