CONTROL UNIT AND KEYPAD This is the brain of your alarm system. Modern alarm systems
are microprocessor based and many have on board diallers attached to their circuit
boards, ie. a means of communicating with a central monitoring station.
The control unit is wired into mains power which is then transformed to 16 volts
AC to power the electronic board. This is in turn rectified to 12 volts DC.
The control unit has a back up battery power supply usually a 6.5AH battery
which is trickle charged by the controller.
This battery should last 5-7 years. The controllers size is dependent on the
number of zones it has, usually 4, 6 or 8 zones are sufficient for most home
or small business application. Larger capacity alarm panels can have up tp 300
zones and are available for specialist applications.
One piece of detection equipment should be installed onto one zone.This makes
fault finding easy and identifies to the monitoring station which zone has activated.
The controller zones have balanced end of line resistors and can be either 24
hour zones, i.e live all the time, or only live when the alarm is set.
As well as zones for detectors the controller also has adjustable exit, entry
delay times and siren run times.
While older alarms were keyswitch operated modern controllers are usually operated
by a keypad or remotes. For all modern alarms the keypad is an extension of
the controller and each model of alarm must have its own keypad. This also applies
to remote on/off units (called remotes), and nightarm stations.
Modern alarms have the capability to have more than one keypad operate them
and can be partially armed, ie. Nitearmed or Stay Away, and as well, zones can
be isolated by the user as required. Access through the keypad is via a PIN
number, usually four digits. The keypad can also send Raid/Duress/medical alarm/fire
signals and can activate the alarm instantaneously if a panic button is pressed.
While we use Texecom Controllers as our preferred model of Controller,
we can supply and install whichever make you require. Experience has taught
that Texecom Alarms are reliable, user friendly,and installer friendly,
We can guarantee to have any repairs carried out economically and quickly. Security
Express is designed for New Zealand conditions and is the equal of any
other product on the market.
We supply Texecom Controllers unless you specify a different type. Larger Capacity
Panels Where a Texecom Panel is not large enough, the following panels
can be used - Arrowhead Elite -
up to 16 zones, 24 user codes, split armed 3 way Solution 16 - up
to 16 zones, 24 user codes, split armed 4 way Esprit - up to 24
zones, 48 user codes, split armed 2 way Challenger or Concept
- up to 300 zones, 999 user codes, 99 areas.
TAMPERPROOF Tamperproof or tampered is a common term to indicate that
if any wires are cut or have been Tampered with the alarm panel will activate
wether it is set or not, 24 hours of the day.
TAMPERSWITCH Tamperswitch is a term to describe a switch that opens
when a cover is removed from a detector, an outside siren or the control unit
which causes the alarm to activate instantly as long as the alarm is set or
the equipment is on a 24 hour zone. The external sirens and control units Safe
Secure install are both tamperswitched to the wall they are attached to as well
as having their front covers tampered as well, so if an attempt is made to open
or remove them, the alarm activates immediatly.
24 HOUR ZONE 24 hour zones are zones that activate 24 hours a day irrespective
as to whether the alarm is set or not. Panic buttons, smoke/heat sensors and
tamperswitches on external sirens and the control panel are usually installed
on 24 hours zones, as can be the cover of infrared detectors Micron alarms can
have as many zones designated as 24 hours zones as required, many alarm panels
only have one or two 24 hour zones. The technician installing the alarm will
automatically install equipment onto 24 hour zones as required.
Adjustable entry delay
Adjustable exit delay
Adjustable siren run time before resetting
Selectable entry zones
Selectable chime zones
Nitearm setting zones
Fast Arm feature
Panic function on keypad (either
silent or audible.)
Medical function on keypad
Fire function on keypad
Duress Code function on keypad (The
panel sends through a duress code to the monitoring station as well as an
unset code)
Arm/Disarm - via keypad enter user code
Code Exchange function allows easy change of user codes.
Zone Isolation feature, any zone or can be isolated 24 user codes are available
EXTERNAL SIRENS There are 4 types external sounders available:
POLYCARBONATE EXTERNAL SIRENS: These sirens are tamper proofed boxes tamperer switched
so if their lid is opened or they are removed from their position they will
activate. When the alarm activates,the siren activates and a strobe light flashes.
These are the most common type used in the security industry. Advantage: Reliability,
no electronic board in the outside siren which will activate by itself if it
gets wet or corrodes. Disadvantage:If the
siren cable is cut it will not activate as it has no independent back up power
source. Unless stipulated differently, this is type
supplied.
STEEL SATELITE SIRENS These sirens have an electronic board plus a back up battery
in them which, if the siren cable is cut will activate.
Advantage: Will activate even if the siren cable is cut (until the battery runs
flat) or if the alarm panel loses power.
Disadvantage: Unreliable, if the siren board gets wet or corrodes it will activate
by itself and will not turn off.
Uses: High risk sites or where the siren cable is easily accessible from the
ground. There are three types of satelite sirens Standard:as above Double Skin:High risk
commercial sites Stainless Steel:Where
corrosion is a problem i.e. salt water/spray
EXTERNAL HORN SIREN/HORN SPEAKERS These are untampered and are a two wire Horn Siren or Speaker which, if the wires are cut, will not operate. Now only usually found in older systems.
RURAL BLASTERS This is a large horn siren that is much louder than a
traditional siren. It has to be powered independently from the alarm power supply.
(Ideal for use in rural environments and large warehouses). Rural blasters do
not replace the need for an external siren, but should be used as an add on.
INTERNAL SIRENS There are two main types
Top HatUsually 120 decibels,(these
protrude from the celing), used where they cannot be flush mounted.
Flush Mount Usually 105 decibels, These look very neat as they do not protrude from the ceiling but are not as loud as tophat sirens, because some of their noise is disipated into the roof. If you are upgrading an alarm, the sirens may have to be changed from speaker types to sirens. Speakers require audio to operate, whereas sirens require 12 volts: while some old panels utilise audio to operate,most modern alarms do
not.
DETECTION EQUIPMENT Passive Infra Red Detectors (PIRs) 95% of the detection equipment used by the Security
Industry are passive infrared detectors, commonly refered to as PIRs.
These are reliable, aesthetically attractive and if installed correctly are
relatively reliable. PIRs measure the movement of a heat source against the
background ambient temperature of the area they are installed in, and if the
difference is great enough will activate. PIRs emit a series of Infra Red
beams like fingers on a hand and at various height levels. The number of beams,
their coverage pattern and range vary for each make and model of detector.
Normally most PIRs cover 12-15 meters at a 90° angle. Beams can be masked
out of detectors if required, ie.so not to cover a fire place, and as well,
modern PIRs have a sensitivity adjustment on them so the PIR will trip the
first, second or third time the infra red beam is broken. PIRs are powered
by 12 volts DC (direct current) from the alarm controller or, if they are
a Radio PIR via a battery, usualy 4.5 volts. Hardwired PIRs are more reliable,
cheaper and are relatively maintenance free. Because of the PIRs coverage
pattern the most effective coverage is gained by having the likely intruder
walk across the coverage area rather than towards the PIR. PIRs have LEDs
in them (light emitting diodes) which come on when the PIR is tripped. This
LED can be turned off if required. As standard we disconnect the LED's in
PIR's in commercial sites. This stops criminals walk testing the detection
area, where as domestic sites we leave them on. The PIR should have a tamper
switch on the cover so if the lid is opened the alarm will go off. The screws
holding the PIR to the wall and the
cable hole should be cemented up so that insects cannot walk over the Infra
Red lens, As well as standard PIRs there are PIRs available that have different
detection patterns, and different ranges, have dual beams, active infrared
and combined pir and microwave tecnology.
Curtain lensed PIRs are available. These only have beams at one height horizontally
or at one position vertically. The problem with this type is getting the PIR
installed in the correct position. Long range PIRs are available, however
these are expensive (up to 10 times the purchase prices of normal PIRs). Sometimes
it is better to add extra detectors which will be more cost effective and
give much better coverage.
As standard we supply Texecom detectors unless
you specify differently. Specifications- Security Detection Equipment (1)Optex Passive Infra Red Detectors RX40QZThese are our
standard PIR. They cover 90° out to 15 meter range. These are inexpensive
and reliable and are used in 95% of sites. RX40QZ Pet, This is
a pet detector, which can provide coverage in areas where there are less than
30kg anamils present. FX40These detectors
are more sensitive than RX40QZ (and more false alarm prone) They also have
a look down zone for use in sites where crawling under the detector's coverage
could be a problem. DX40These combine
both PIR and Microwave technology for use in harsh environments or where there
are pets.
These detectors combine both PIR and microwave into one sensor. The detector
will only operate when both PIR and microwave are tripped within a set time
span. They are designed for use in harsh environments, and are more expensive
than standard detectors. As mentioned earlier both PIRs and alarm panels have
sensitivity adjustments in them. However, both of these will only cope with
minor examples of harsh environments or maybe one slow cat. For other harsh
environment installations Optex DX40 Dual Technology detectors should be used.
FX360These are a ceiling
mounted PIR covering up to 6 meters at an installation height of 12ft. Ideal
for domestic and small areas in businesses.
(2) Ultrasonic Detectors These detectors detect the disruption of sound waves
and should be used in high risk sites. They do not transmit through glass
or walls and are less prone to false alarms than microwave detectors.
(3) Microwave Detectors Microwave detectors detect movement only. Their pattern
of coverage is of a parababala type up to 15 meters in distance. Microwave
detectors must have their beams terminated into the ground as they operate
through walls and windows. They will detect for example water running down
a drainpipe inside a wall. For this reason it is crucial that microwaves are
set up correctly. Although false alarms are obviously a problem for the aforementioned
reasons, these detectors do offer the highest degree of protection as they
cannot be shielded in any way. If something moves the detector activates
While microwave detectors are expensive they shold be used in high-risk situations
and usually in combination with standard PIRs.
(4) Glass Break Sensors Glass break sensors detect the noise of breaking glass
and are usually set up inside a shop facing glass windows/doors. As a rule
of thumb one glass break sensor will protect 5-6 meters of glass. Glass break
detectors DO NOT operate with laminated or toughened glass. Shock Sensors
must be used in this instance. They only operate to a maximum glass thickness
of 4ml. Most glassbreak sensors have a sensitivity adjustment and some models
have a pulse count facility. These types can be an advantage as they won't
activate if people bang the windows with their keys or the like, however they
may not operate if only a small amount of glass is broken. SX360Z A ceiling
mounted PIR for use in ceilings up to 16ft. CX50/50AM A long range PIR with
a dual purpose sphered lens that will give wide angle coverage of 15m x 15m
or long range curtain
coverage of 24m x 1.8m. CX70M A long range PIR will a dual purpose sphered
lens that will give wide angle coverage of 21m x 21m or long range curtain
coverage
of 45m x 2.4m.
Glass break sensors should be on an instant zone, so the alarm is sounding
while the burglar is still outside the premises. While Glass brea k sensors
are used in commercial installations and can be effective, shops should not
have valuable items on display close to windows as glass can be covertly cut
out which may not create enough noise to activate the glass break sensor.
(5) Point to Point Beams Point to Point beams can be used both inside premises
and outside, they operate by transmitting a beam of light between 2 fixed
points, When the beam is broken the detector activates. The most reliable
Point to Point beams have two beams approximately 100mm apart, both of which
must be broken to activate. That way a leaf or bird will not cause false alarms.
The Point to Point beam required depends (i) on whether they are inside,
(ii) weather they are situated outside
(iii) the length of beam required. 12v DC must be supplied to each end of the Point to
Point but only the transmitter requires a closed loop wired back to a zone
on the alarm panel. Point to Point beams give ideal protection for car yards,
driveways, farmyards etc. They are expensive but we have found Optex to be
very reliable.
(6) Outdoor Protection (excluding Point
to Point beams) There are various other types of outdoor detectors,
Some outdoor detectors work like inside PIRs while some have curtain type
lenses and all are expensive.
Any detector that is outdoors must be of a dual beam type so as to avoid false
alarms. i) OptexVX40, this covers 15 meters from itself with the beams parallel
to the ground. This unit is normally situated at approximately one meter from
the ground. ii) Optex VX40A is the above detector, but with
a voice warning.
iii) Optex DX40 PIRs, while non waterproof, they can be a cost effective way
of protecting outside areas as long as the detector itself is situated in
an area where it cannot get wet, and the area is well protected.
For example inside a shed.
iv) LX40 dual beam outdoor detector. This unit is immune to sunlight and covers
up to 15 meters standard.
v) LX80N - a long range version of LX40. Operates up to 30 meters and transmits
2 beams 2 meters apart at 30meters vi) D+D A very reliable outdoor PIR With
dual beams
(7) Shock Sensors and Vibration Sensors A variety of shock sensors are available. Prices are
available on request. These operate if a sharp jolt is felt. They are usually
connected to an alarm zone by a 2-core cable, though some shock/vibration
detectors also require 12v DC to operate. Uses for shock sensors and vibration
sensors are on safes, or in or on walls in high-risk sites. Shock and vibration
sensors should be connected to instant zones on the alarm.
(8) Industrial Switches There are hundreds of different Industrial Switches
available. Common applications:
-Temperature Switches- application - freezers, water, chicken sheds, boilers
- Humidity Sensors - application - Paper storage areas, file storage rooms
- Water Level detectors - application - Bilge levels in boats, river and stream
levels, water tank levels.
Each must be priced according to its application
Specification Fire detection equipment
i). Smoke Detectors Smoke Detectors can be thermal or photoelectric type.
There are very specific Fire regulations regarding the siting of smoke detectors
and a smoke detectors should never be installed witin 100mm of a corner of
a room as in a fire this becomes oxygen trap.
ii) Heat Sensors Heat sensors come in two types - 57° and 75° sensors.
There are specific fire regulations regarding siting these and the type of
cable required.
Cable must be 1.00mm. Heat sensors must be sited no more than two meters from
any wall and three meters apart. Heat sensors are wired up in series.
REMOTES ON/OFF buttons Some modern alarm systems have the capacity to be armed
and disarmed via a remote button carried on your key ring or the like. Most
alarm panels have this feature. In adding remotes 0ne receiver is added to
the control unit and then as many remotes as required can be added to this
receiver. There are 2 types of remotes - 2 or 4 button. The remotes have i) full arm/disarm function
ii) partial arm/disarm function
iii) panic function achieved by holding down any button for three seconds
or a combination of buttons The 4 button remote has the above functions plus the
third and fourth buttons that can be programmed to activate any output on
the alarm. Normally these open and close the garage door, and can be used
to turn on/off switches. The 2 or 4 button remotes can be programmed to either
flash the outside siren light or squawk the outside siren on setting and unsetting
to let the operator know the alarm is set. Remotes do not replace the keypad
but are an extra, which makes operating the alarm easy especially where there
are automatic garage door openers.
On/off remotes are perceived to be a security risk because: - Burglars can scan your code then open remotely. In
reality this is unlikely to occur and for most remotes this is impossible
because the remotes operate on a rolling code system.
- The more likely scenario is that someone will steal your remote and use
it to disarm your alarm.
Remotes should not be used in Commercial installations for this reason. Remotes
are powered by batteries which have to be replaced regularly, approximately
6 monthly. These batteries can be purchased at camera shops and the like and
the client can replace them themselves.
The problems with remotes are: i) They are not waterproof and can be vulnerable
to damage from water, especially salt water. ii) They can be easily pressed
accidentally while in pockets/purses etc.
iii) They are vulnerable to damage, breaking off key rings,eyelets, sockets.
Remotes can not be guaranteed for the aforementioned reasons. Remotes are matched to Control panels; if you want remotes
to be added to your alarm then we need to know the type of alarm panel and,
we can then acertian if a receiver is available as only some panels can operate
remotes. These are usually post 1995 alarm models.
Remote prices quoted are for Micron remotes only. For remote prices for other
panels, prices on application. Remember you require a receiver board for the
first remote, thereafter as many remotes as you wish can be added.
NITEARM STATIONS Nitearm stations are normally situated in a bedroom
and enable the user to partially arm/disarm the alarm. They also have a panic
feature on them. Nitearm stations are an add on to the alarm Controller. Not
all alarm panels have night arm stations and Nitearm stations are only compatible
with the model of controller they are made for. The location of Nitearm stations
is important as they, and panic buttons, can be virtually impossible to install
beside the client's bed, and if the beds position is moved then the nitearm
is in the wrong place. A good idea is to install the night arm by the door
inside the bedroom, and and instal a one way lock on the door of the bedroom
side. the bedroom then becomes a safe zone. If you want to add Nitearm stations
then you will have to ensure that your alarm system is capable of having a
Nitearm Station added.
The prices quoted are for Micron Nitearm stations only.
PANIC BUTTONS Fixed Panic Buttons can be added to any alarm. These
are simply a non-latching switch, usually a push button, are the same size
as a light switch and are wired into a 24 hour zone on the alarm panel. Beware of where you site Panic Buttons -
it can be virtually impossible to wire them to beside
the bed. Portable Panic buttons give good protection to at risk people where
they may not be able to reach a fixed button. The product is a wristwatch
or necklace pendant that sends a remote signal to a reciever unit wired into
the alarm on a 24 hour zone. Multiple pendants can be attached to one receiver. The
range
of transmission depends on the building's construction and products used,
however, up to 50 meters is normal.