Hi i replaced the battery in the dualcom in April and has been sending battery fail to the control room ever since.
Any ideas?

Steve Davies, October 2010

Why you getting upset nutmeg?
Fact is they used to have onboard not now. Thats all I was getting across.

I`d say we were 50/50 on this Nick.

Alarm, November 2010

First answer -
......
"A dualcom does not have a onboard battery."
.......

What is it about this statement and the following answer/s that can't be understood?

The age of the DualCom had/has not been mentioned anywhere.

acorn, October 2010

At least one of you is right, ish, the older dual coms do have a small yuasa battery on board, pain in the bum, sending low batt signals through, Good to see you guy's havent given up trying to assist the general public in their hour of need,
Please note the battery from Yuasa has a plug on the end to attach to the dual com pcb,
Regards
Nick 07842 480037

Nick, October 2010

Another answer for the OP, could it be the control panel/Power supply battery fail being signaled?

Alarm, October 2010

Thanks I also made some enquires on my trade site.
Seems the earlier ones had battery back up on board, not the newer ones.
I`ll get conformation tomorrow.
As before appoliges as they obviously did at one stage.

Alarm, October 2010

The first posted is from a DualCom Plus, this is from a DualCom

VDN DualCom Mk.II
Installation Manual
Description
VDN Dualcom is an advanced auto-dialling Digital Communication Device for
secure alarm reporting. It can transmit alarm signals to an Alarm Receiving
Centre using the PSTN (Public Switched Telephone Network) or VDN (Vodafone
Data Network).
When Dualcom is triggered by the alarm system it initiates calls to the Alarm
Receiving Centre over both communication paths simultaneously. Once it has
received an acknowledgement signal from one path it clears the calls on both
paths so that the Alarm Receiving Centre receives only one alarm notification.
Test calls are delivered using both paths to test the system fully.
Dualcom monitors both communication paths continuously. A fault on one path
is reported to the Alarm Receiving Centre using the other functioning path. Any
Alarm System bell delay is maintained unless both paths are in fault, or the
Alarm Abort feature (if programmed) is used.
Dualcom includes an internal battery that ensures continued reporting and
monitoring even in the event of a total power failure to the Dualcom.
Dualcom comes complete with Alarm Abort feature to enable older alarm systems
to comply with the ACPO false alarm policy. Once the system is set, if a
mis-operation occurs and a correct user code is entered within 90 seconds, a
restore on channel 3 or separate code will be sent to the Alarm Receiving
Centre. If programmed, a Tellback will also reset the control panel.
Dualcom is available in two versions; Stand alone and Plug-on. A tamper protected
steel box with an integral 1 amp power supply is also available. Dualcom
is housed in an ABS plastic case which protects the electronics and meets
PSTN safety requirements. Dualcom has 8 alarm inputs. This can be expanded
to 16 by adding a plug-on module which also provides 8 outputs. For part numbers
of these accessories, see over.
There is a lot of technical information in this manual. For trouble-free
installation it is essential to follow the site survey and installation recommendations
on pages 4-7.
2

acorn, October 2010

Direct copy/paste from .......


VDN DualCom Plus
Installation Manual
Description
Dualcom Plus is an advanced auto-dialling Digital Communication Device for
secure alarm reporting. It can transmit alarm signals to an Alarm Receiving
Centre using the PSTN (Public Switched Telephone Network) or VDN (Vodafone
Data Network).
Dualcom Plus includes improved operational and safety features.
+ Enhanced diagnostics are available during installation.
+ Final commissioning of the product will be inhibited until it has been
configured and installed correctly (ie. Correct signal strength). This will
avoid repeat visits from the Installer to marginal and/or poorly installed
units.
+ Live display of FSSI and RSSI provided on a LED display
+ Enhanced polling (optional) of 5 minutes on the functioning path.
+ Notification if both Radio and Telephone paths are lost.
Dualcom Plus monitors both communication paths continuously. A fault on one
path is reported to the Alarm Receiving Centre using the other functioning path.
Any Alarm System bell delay is maintained unless both paths are in fault, or
the Alarm Abort feature (if programmed) is used.
When Dualcom Plus is triggered by the alarm system it initiates calls to the
Alarm Receiving Centre via the programmed ‘preferred path’, e.g. Radio. If this
fails then calls are sent via the other path, e.g. Telephone Line. Once it has
received an acknowledgement signal from one path it clears the call so that the
Alarm Receiving Centre receives only one alarm notification. Test calls are delivered
using both paths.
Dualcom Plus includes an internal battery that ensures continued reporting and
monitoring even in the event of a total power failure to the Dualcom Plus.
Dualcom Plus is available in two versions; Stand alone and Plug-on. A tamper
protected steel box with an integral 1 amp power supply is also available.
Dualcom Plus is housed in an ABS plastic case which protects the electronics
and meets PSTN safety requirements.
Dualcom Plus has 8 alarm inputs. This can be expanded to 16 by adding a
plug-on module which also provides 8 outputs.
2

acorn, October 2010

Yep, every manual on the site. The battery is an add on.
Last one I fitted did not Self-power.

Nor does a Redcare or an Emizon. A digi or a dialler.
I`ll ring (CSL) them tomorrow and see what they say:D

If I am wrong you`ll be the first to get an apology from myself. But I just read 60 pages of the G2 G3 G4 unit.

Alarm, October 2010

Try looking at a manual, that's where the info came from, as quoted.

acorn, October 2010

Acorn, my little chestnut, if i`m wrong tell me. According to my manuals there is no battery and I`ve never seen one on a unit. Got a link?

Alarm, October 2010

or am i being stupid again???????

gts, October 2010

why not send stevie boy back to school,?get him educated.?

gts, October 2010

I'll send all my different DualCom manuals back then and get them corrected.

acorn, October 2010

am sure his maint comp dont know he buggering about with it guys

gts, October 2010

Sorry m8, it does not have a on board battery. There is a back up sold seperately ( http://www.csldual.com/InstallerShop/DualComBattery-p.aspx).
I suggest the OP checks the leads from the unit.

Again why is a end user plaing with signaling equipment?

Alarm, October 2010

From a CSL Inst. Manual -

Dualcom includes an internal battery that ensures continued reporting and monitoring even in the event of a total power failure to the Dualcom.

.. but, I do strongly agree with you should not be playing with this.

acorn, October 2010

Why are you messing with a dualcom?
A dualcom does not have a onboard battery.
A good idea is to get your maintenence company in to check this out.

Alarm, October 2010