HRW EKey EKRXGSM User manual

HRW Limited Unit 505, 5/F, Wai Wah Commercial Centre Ph [phone]
6 Wilmer Street, Sai Ying Pun Fax [phone]
Hong Kong www.hrw.hk
EKRXGSM – Remote Receiver c/w GSM Module ®
The EKRXGSM remote control receiver is designed to deliver unparalleled flexibility for all domestic and
commercial applications.
Combining a normal E-Key receiver with a powerful GSM module enables any gate/door or alarm panel to be
triggered by both E-Key s and mobile or fixed telephones. The receiver can be triggered by simply calling the
GSM module. As soon as the EKRXGSM detects an incoming call from a valid telephone it will trigger it’s
output as if a valid E-Key were used - without answering the call.
All features including phone number restriction, E-Key addition or deletion etc can be remotely changed via
password protected SMS from any mobile phone or by a PC using simple software combined with a GSM
modem.
Applications
Garage doors, automatic gates
Remote arming and disarming of security alarms
Remote area control
Personal emergency or duress alarms
Features
Can be used to replace any existing remote control system
Free activation of gate/door by ringing the EKRXGSM phone number
Add and delete E-Keys via SMS
Access can be restricted to a group of valid phone numbers
All settings are be password protected
Simple system management by sending SMS using a mobile phone or PC and GSM modem
combination
Optional 5 second call-back on activation to confirm reception of incoming call
Configurable external alarm input allows the EKRXGSM to send alarm SMS messages to selected
users upon activation
•No price penalty for far superior technology

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Description of Operation
The EKRXGSM is a self-contained quad band GSM data module seamlessly integrated with the standalone
range of E-Key receivers. The unique pairing of these technologies allows unparalleled flexibility in the
remote operation and management of access control for any number applications.
The EKRXGSM enables any gate/door or alarm panel to be triggered by both E-Keys and mobile or fixed
telephones. Provided the caller ID of the originating call is validated, a gate or similar apparatus can be
activated remotely at no cost to the caller. No cost because the EKRXGSM does not need to answer the call
to be able to determine if the caller’s number is valid. Alternatively, an SMS containing a correct password
can be sent to the EKRXGSM and will cause it to trigger the E-Key receiver.
Instructions
All configuration can be made via a PC based application with a GSM modem connected to the PC. The
following instructions relate to the configuration possible solely using SMS commands from a mobile phone.
To trigger the E-Key receiver’s outputs by telephone call
Use a landline or mobile telephone to call the EKRXGSM. Hang up after hearing a ring tone for about 2
seconds. If the caller ID of the telephone is recognised by the EKRXGSM, it will command the connected E-
Key receiver to trigger the equivalent output as would occur if a valid E-Key button were pressed. Since the
call was never answered, there will be no call costs associated with the transaction.
To trigger the E-Key receiver by SMS from a recognized mobile telephone
Send an SMS message to the EKRXGSM in the following format: Bx
•x is the equivalent E-Key button number from 1…4
If the caller ID associated with the SMS is recognized by the EKRXGSM, it will command the connected E-
Key receiver to trigger the equivalent output as would occur if the similarly numbered button of a valid E-Key
were pressed. Eg: Sending the SMS “B3” will cause the E-Key receiver to trigger the equivalent output as
would occur if button 3 of a valid E-Key were pressed.
To trigger the E-Key receiver by SMS from an unrecognized mobile telephone
Send an SMS message to the EKRXGSM in the following format: smspass,Bx
•smspass is a 5…8 character case sensitive alphanumeric user password
•x is the equivalent E-Key button number from 1…4
If the SMS password is recognized by the EKRXGSM, it will command the connected E-Key receiver to
trigger the equivalent output as would occur if the xth button of a valid E-Key were pressed. Eg: Sending the
SMS “sesame,B3” will cause the E-Key receiver to trigger the equivalent output as would occur if button 3 of a
valid E-Key were pressed, provided the password “sesame” is listed as a valid SMS password.

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Instructions (cont…)
To add a new E-Key
Send an SMS message to the EKRXGSM in the following format: password:A(nnnnnnnn,0000)
•password is the 5…8 character case sensitive alphanumeric master password
•nnnnnnnn is the 8 digit hexadecimal E-Key serial number
Eg: Sending the SMS “Password:A(00001EA5,0000)” will add an E-Key with a serial number of 00001EA5
(derived from the S/N:N00001EA5 printed on the E-Key label) using the default master password of
“Password”.
To delete an E-Key
Send an SMS message to the EKRXGSM in the following format: password:D(nnnnnnnn)
•password is the 5…8 character case sensitive alphanumeric master password
•nnnnnnnn is the 8 digit hexadecimal E-Key serial number
Eg: Sending the SMS “Password:D(00001EA5)” will delete an E-Key in the E-Key receiver with a serial
number of 00001EA5 (derived from the S/N:N00001EA5 printed on the E-Key label) using the default master
password of “Password”.
To delete all E-Keys
Send an SMS message to the EKRXGSM in the following format: password:D(ALL)
•password is the 5…8 character case sensitive alphanumeric master password
Eg: Sending the SMS “Password:D(ALL)” will delete all E-Keys in the E-Key receiver using
the default master password of “Password”.
To add a new phone number
Send an SMS message to the EKRXGSM in the following format: password:I(nnnnnnnn,smspass,z,v,e,s)
•password is the 5…8 character case sensitive alphanumeric master password
•nnnnnnnn is the 8 digit mobile number or 8 digit landline number (min. 8 digits / max. 15 digits if area
code, country code required to be included)
•smspass is a 5…8 character case sensitive alphanumeric password used when triggering
the gate by SMS
•z is the user group (1…8)
•v is a valid or void flag where 1 indicates valid and 0 indicates void
•e is whether a successful incoming call or SMS is echoed back to the originator with a 5
second confirmation call where 1 activates echo and 0 disables it
•s is whether or not the EKRXGSM sends alarm SMS messages to this user if it’s alarm input has
been triggered where 1 activates the feature and 0 disables it
Eg: Sending the SMS “Password:I(0892481646,secret,1,1,1,1)” will add the landline phone number (08)
92481646 with a user password of “secret”. The number and SMS password are valid for use, grouped into
group 1 and the EKRXGSM will call the phone back for 5 seconds after receiving a successful activation from
the caller. The EKRXGSM will also send alarm and restore SMS messages if it’s alarm input circuit has been

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Instructions (cont…)
activated and non zero alarm messages have been programmed.
Eg: Sending the SMS “Password:I(0411115856,secret,1,1,0,0)” will add the mobile phone number
0411114846 with a user password of “secret”. The number and SMS password are valid for use, grouped into
group 1 with echo and alarm messaging disabled.
To modify the details of an existing phone number
Send an SMS message to the EKRXGSM in the following format:
password:I(nnnnnnnnnn,smspass,z,v,e,s)
•password is the 5…8 character case sensitive alphanumeric master password
•nnnnnnnnnn is the 10 digit mobile number or 10 digit landline number (including area code) whose
status is to be modified
•smspass is a 5…8 character case sensitive alphanumeric password used when triggering the gate
by SMS
•z is the user group (1…8)
•v is a valid or void flag where 1 indicates valid and 0 indicates void
•e is whether a successful incoming call is echoed back to the originator where 1 activates echo and 0
disables it
•s is whether or not the EKRXGSM sends alarm SMS messages to this user if it’s alarm input has
been triggered where 1 activates the feature and 0 disables it
Eg: Sending the SMS “Password:I(0892481646,nosecret,6,1,0,0)” will modify the status of the landline phone
number [phone] with a user password of “nosecret”. The number and SMS password are valid for use,
grouped into group 6 with echo and alarm messaging disabled
Eg: Sending the SMS “Password:I(0411115856,secret,1,0,0,1)” will modify the status of the mobile phone
number 0411114846 with a user password of “secret”. The number and SMS password are not valid for use,
grouped into group 1 with echo disabled and alarm messaging enabled
To delete a phone number
Send an SMS message to the EKRXGSM in the following format: password:E(nnnnnnnnnn)
•password is the 5…8 character case sensitive alphanumeric master password
•nnnnnnnnnn is the 10 digit mobile number or 10 digit landline number (including area code)
Eg: Sending the SMS “Password:E(0892481646)” will delete the landline phone number [phone] and
it’s associated SMS password, using the default master password of “Password”
To delete all phone numbers
Send an SMS message to the EKRXGSM in the following format: password:E(ALL)
•password is the 5…8 character case sensitive alphanumeric master password
Eg: Sending the SMS “Password:E(ALL)” will delete all phone numbers and associated SMS
passwords in the EKRXGSM, using the default master password of “Password”.

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Instructions (cont…)
To set the time and date in the onboard clock
Send an SMS message to the EKRXGSM in the following format: password:C(yy/mm/dd,hh:mm+/-gg)
•password is the 5…8 character case sensitive alphanumeric master password.
•yy/mm/dd is the numerical year, month and day of month
•hh:mm is the 24 hour time in hours and minutes
•+/-gg is the number of hours from Greenwich Mean Time GMT of the time zone where the
•EKRXGSM is installed multiplied by 4
Eg: Sending the SMS “Password:C(07/07/01,14:30+32)” will set the clock to 2:30pm on 1st July 2007 with a
time zone offset of GMT+8 hours using the default master password of “Password”.
Eg: Sending the SMS “Password:C(07/07/01,14:30-10)” will set the clock to 2:30pm on 1st July 2007 with a
time zone offset of GMT-2 hours using the default master password of “Password”.
Eg: Sending the SMS “Password:C(07/07/01,14:30+00)” will set the clock to 2:30pm on 1st July 2007 with a
time zone offset of GMT+0 hours using the default master password of “Password”.
To change the master password
Send an SMS message to the EKRXGSM in the following format: password:W(newpassword)
•password is the 5…8 character case sensitive alphanumeric master password
•newpassword is the new 5…8 character case sensitive alphanumeric master password
Eg: Sending the SMS “Password:W(2Secret)” will change the master password to “2Secret”.
To set the details for a group
Send an SMS message to the EKRXGSM in the following format: password:Z(n,hh:mm-hh:mm,SMTWTFS)
•n is the group number from 1…8
•hh:mm-hh:mm is the active time span for the group in 24 hour format
•SMTWTFS are the active days for the group from Sunday through to Saturday
Eg: Sending the SMS “Password:Z(5,00:00-23:59.SMTWTFS)” will set group 5 to be active for 24 hours a day
and 7 days a week.
Eg: Sending the SMS “Password:Z(2,07:45-18:30.xMTWTFx)” will set group 2 to be active from 7:45am to
6:30pm from Monday to Friday.

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Instructions (cont…)
To set the E-Key receiver links
Send an SMS message to the EKRXGSM in the following format: password:L(abcde)
•a is the fifth link with 1 indicating the link is fitted and 0 indicating the link is not fitted
•b is the forth link with 1 indicating the link is fitted and 0 indicating the link is not fitted
•c is the third link with 1 indicating the link is fitted and 0 indicating the link is not fitted
•d is the second link with 1 indicating the link is fitted and 0 indicating the link is not fitted
•e is the first link with 1 indicating the link is fitted and 0 indicating the link is not fitted
The meaning of each link corresponds to the different E-Key receivers as follows:
EKRX42S / EKRX44S
•aFF /not used (set as 0 or 1)
•bL4 /not used (set as 0 or 1)
•cL3 /FF
•dL2 / M2
•eL1 /M1
Eg: Sending the SMS “Password:L(00011)” to an EKRXGSM connected to a EKRX42S receiver will act as if
the L1 and L2 links are fitted. This will enable E-Key buttons 1 and 2 to activate the first relay output in single
channel mode. (See the EKRX42S instructions for further options)
Eg: Sending the SMS “Password:L(10000)” to an EKRXGSM connected to a EKRX44S receiver will act as if
the FF link are fitted. This will enable E-Key buttons 1…4 to activate relays 1…4 respectively in four channel
mode with flip flop enabled. (See the EKRX44S instructions for further options)
To set the default button activation when receiving an incoming call
Send an SMS message to the EKRXGSM in the following format: password:B(x)
•xis the required equivalent E-Key button number from 1…4 that is emulated when the EKRXGSM
receives a validated incoming call. The factory default setting is a left button or button 1 emulation
Eg: Sending the SMS “Password:B(3)” will cause the EKRXGSM to initiate the equivalent of an E-Key button
3 press when it receives a validated incoming phone call.
Alarm input connection
The NSGSM opto-isolated alarm input circuit is designed to accept various AC and DC input triggers ranging
from 5 to 48 Volts. The alarm active SMS is sent when the input detects the application of an applied voltage,
while the alarm reset SMS is sent when the input detects the removal of voltage. Care must be taken to
include a current limiting resistor in series with the voltage source with the resistance chosen in accordance
with the table:
Aux. Output

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Instructions (cont…)
To set the alarm notification SMS message
Send an SMS message to the EKRXGSM in the following format: password:V(text message)
•text message is any sort of meaningful text message that describes to the recipient that an alarm or
other condition has been detected by the EKRXGSM’s alarm input circuit. If a null message (ie one
whithout any characters is set), the EKRXGSM will not send an alarm activated SMS
Eg: Sending the SMS “Password:V(Gate forced alarm)” will cause the EKRXGSM to send the SMS “Gate
forced alarm” to selected recipients when the EKRXGSM alarm input has been triggered.
Eg: Sending the SMS “Password:V()” will prevent the EKRXGSM from sending an alarm activated message
when the EKRXGSM alarm input has been triggered.
To set the alarm restored notification SMS message
Send an SMS message to the EKRXGSM in the following format: password:U(text message)
•text message is any sort of meaningful text message that describes to the recipient that an alarm or
other condition has been detected by the EKRXGSM’s alarm input circuit as returning to a non alarm
state.
Eg: Sending the SMS “Password:U(Gate forced alarm reset)” will cause the EKRXGSM to send the SMS
“Gate forced alarm reset” to selected recipients when the EKRXGSM alarm input has been reset.
Eg: Sending the SMS “Password:U()” will prevent the EKRXGSM from sending an alarm reset message when
the EKRXGSM alarm input has been reset.
Sending multiple commands in one SMS
Multiple commands can be sent in one SMS by using the following format:
password:command1:command2:….commandx etc
•password is the 5…8 character case sensitive alphanumeric master password
•command1 etc are any of the above mentioned configuration commands
Eg: Sending the SMS “Password:D(ALL):E(ALL):A(00001EA5,0000):I(0892481646,secret,1,1,1,1)” will
•Delete all E-Keys and phone numbers
•Add an E-Key with a serial number of 00001EA5 (derived from the S/N:N00001EA5 printed on the E-
Key label)
•Add the landline phone number [phone] with a user password of “secret”
•The number and SMS password are valid for use, grouped into group 1
•The EKRXGSM will call the phone back for 5 seconds after receiving a successful activation from the
caller
•The EKRXGSM will also send alarm and restore SMS messages if it’s alarm input circuit has been
activated and non zero alarm messages have been programmed
•The default master password of “Password” was used
The number of contiguous commands sent is only limited to the total number of characters used in any one
SMS. Once the limit of 160 characters is used, the message should be trimmed to the last whole command.

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Phone Number Comparison Setting (Function 0)
The EKRXGSM has been carefully designed to accommodate area codes and country codes should they be
applicable for any particular application. The following examples may assist in maximizing the usefulness of
the EKRXGSM while minimizing complexity.
All phone numbers should be stored with the full country code and area code as would be used if calling a
number using IDD (International Direct Dialing) from a mobile phone.
•A Hong Kong mobile number of 94001234 would be stored as [phone]
•A Hong Kong fixed number of 25461234 would be stored as [phone]
•An Australian mobile number of 0411115856 would be stored as [phone]
•An Australian fixed number of [phone] would be stored as [phone]
•A New Zealand mobile number of 021123456 would be stored as [phone]
•A New Zealand fixed number of [phone] would be stored as [phone]
•A Fijian mobile number of 9212345 would be stored as [phone]
•A Fijian fixed number of 3212345 would be stored as [phone]
Presuming that all the above phone numbers were programmed into the EKRXGSM database, the number of
digits for phone number comparison (Function O) should be set as follows, depending on which country the
EKRXGSM is located.
•Located in Hong Kong, the number of digits compared should be 8
•In Australia, the number of digits compared should be 9
•In New Zealand, the number of digits compared should be 8
•In Fiji, the number of digits compared should be 7
The methodology that determines the above selections is based on the desire to choose the most digits that
will unambiguously show the caller ID from a phone that originates a call or SMS both locally and from
another state or country.
In Australia, for example, all land line and mobile numbers use an area code that has a leading zero. Because
the leading zero is omitted when the number is used with Australia’s country code and because an SMS sent
from a mobile phone has it’s caller ID shown as a full country coded number as opposed to when a mobile
phone originates a phone call, the mobile number 0411115856 will appear either as 0411115856 or
[phone].
The number of digits that represent both versions unambiguously is 9; ie 411115856.

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Power Supply Configuration
The EKRXGSM is capable of being powered with voltages ranging from 7…16 Vdc with a maximum current
capacity of 1 Amp. Power is supplied via a 2.1mm DC connector with the centre pin being positive.
Technical Data
Power supply:
Max. number of valid E-Keys:
Max. number of valid phone numbers:
Telecommunications Frequency:
Compatible E-Key Receivers:
Dimensions (mm):
7…16Vdc, 1A (peak)
340
340
Quad band GSM
EKRX42-S, EKRX44-S
80 x 72 x 30
Ordering
EKRXGSM Four channel RF key with code-hopping security, in keyfob style
package with key-chain