CN G203 User manual

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1. Products instruction
Based on GSM/3G/4G communication protocol, supports 1001 authorized users. Authorized
users can remotely control the equipment, systems and machines connected to the product by
SMS commands & free calling. It is widely used in access control systems, garage doors, swing
doors ,folding doors,sliding doors, parking system and the equipments that can be connected to
the relay control , the G202PLUS gate controller & G203 gate controller will send a notification (via
SMS) to the user of the result of the remote control (such as the opening and closing status of the
gate).
With real authorize and multi-level authorization, more security. no authorize no access, even
if you know the password.
2. Physical Layout
Connectiong port and lightings
ANT
Antennas port
Signal
Signal light：
1、Registering the network signal: flashes quickly, once per second
2、The network registration is successful: flashes quickly, flash every 2 seconds
3、Reset successfully；quick flash 4 times
Run
Run light：
1、Device is loading SMS function: long light about 2 seconds
2、Loading and process SMS successfully :slowly flash,flash every 2 seconds
3、Reset successfully；quick flash 4 times；
Relay
Relay light: Relay on：lighting，relay off: off
Reset
button
Reset button：
1. Press for 5 seconds to reset,it will delete all parameters before authorized.reset
successfully ,the RUN light will flash 4 times quickly,then device will short
power off and restart
2. Quickly press the reset button 2 times, the run and signal light will enter a
slient status, press the reset button quickly 1 time, the light will return normal
flash.after the device reset or power on again, the light also will return normal
flash.
3. Quickly press 4 times to reset device：
After the restart is successful, the device will feed back information to the super
administrator via SMS
DC
+
Power supply input, Positive wire.

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9~36V
-
Power supply input, Negative wire.
Relay
Output
NO
Normally Open port. The relay is 3A/240VAC. Connect to the switch of the
electric lock or device.
COM
Common port. The relay is 3A/240VAC. Connect to the switch of the electric
lock or device.
NC
Normally Close port. The relay is 3A/240VAC. Connect to the switch of the
electric lock or device
Wired Switch
Dry contact, used to be connected with wired switch, like push button.
Notice: It should not be connected with voltage input
3. Technical parameters
Rated Voltage: DC 9V~36V/1A
Working temperature: -10℃～+60℃
Storage temperature: -20℃～+60℃
Relative humidity: 10-90%, No condensation
Work frequency:
GSM: 850/900/1800/1900MHz
3G WCDMA: 900/2100 MHz UMTS
3G CDMA2000:850/1900MHz UMTS
3G: 850/2100MHz UMTS
4G:
C:GSM:900/1800,LTE-FDD B1/B3/B5/B8 LTE-TDD:B34/B38/B39/B40/B41
E:GSM:900/1800,LTE-FDD B1/B3/B5/B7/B8/B20
SA:GSM:850/900/1800/1900M LTE-FDD B1/B3/B5/B7/B8/B28/B66
Communication protocol: GSM PHASE 2/2+ (include data service)
Related Voltage of the Output Relay: 3A/240V AC
SIM Card：Nano type, 3V
Antenna: 50 Ω SMA
Wired Switch: Supports
Dimension: 96.5*50*31.5mm
Net Weight: 88g
Relay port:
Contact Capacity ：5 Amps at 250VAC Cosφ=1. 20 Amps at 14VDC
4. Installation
1．A nano SIM card support basic communication function for SMS and calling, close the
PIN lock
2．Connecting diagram
3．Follow the commands list to operate
4．After the first authorize successfully, follow the commands list and the user manual to
do
other settings

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Connecting diagram:

- 4 -

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5. Commands list and note
Command name
Commands list,
All the commands do not attach “[]”
super(admin) pwd：1234
normal users pwd：0000
Note
Who can use
the commands
Authorize super(admin)
users
1234#TEL【phone number】#DEF#
This command to authorizes the
new user to be the super(admin)
user, and automatically assign a
user ID, the user ID is 001-999
(The first user authorized is the
super administrator user by
default)
Super(admin)
users
1234#TEL【phone number】#【user ID】#
This command authorizes the new
user to be the super(admin)
user,you need edit the user ID by
yourself。
(User ID rules: English letters,
numbers or combinations, if it is a
pure number within 3 digits, it will
be the user ID.)
Super(admin)
users
Authorize normal users
(only G203 support to
normal users)
1234#NORTEL【phone number】#DEF#
This command authorizes a new
phone number to be a normal user,
and automatically assign a user ID,
the user ID range is 001-999
Super(admin)
users
1234#NORTEL【phone number】#【user
ID】#
This command authorizes the new
user to be a normal user, you need
edit the user ID by yourself
(User ID rules: English letters,
numbers or combinations, if it is a
pure number within 3 digits, it will
be the user ID.)
Super(admin)
users
Calling to access
-
Calling to access the device, device
will hang up automatically
All authorized
users
Relay on
1234#ON#
0000#ON#
Relay on by SMS, if there is relay
delay time settings, the relay on
time follow the relay delay setting.
All authorized
users
Keep relay always on
1234#KPON#
0000#KPON#
Keep the relay on , until you off it
by SMS or call
All authorized
users
Relay off
1234#OFF#
0000#OFF#
Relay off
All authorized
users

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Check the relay status
1234#RELAY?
0000#RELAY?
Checkthe relay status on or off
All authorized
users
Check the signal value
1234#CSQ?
0000#CSQ?
Check the signal value
All authorized
users
Check users
1234#TEL【user ID】？
Check the user phone number by
user ID
Super(admin)
users
1234#QRYTEL【phone number】？
Check the users by phone number
Super(admin)
users
1234#TELALL？
Check all users
Super(admin)
users
Delete users
1234#TEL#【user ID】#
Delete users by user ID, the super
admin user can not be deleted
Super(admin)
users
1234#DELTEL#【phone number】#
Delete the user by phone number,
the super admin user can not be
deleted
Super(admin)
users
Change Super(admin)
password
1234#PWD【new password】#PWD【new
password】#
Change the super(admin) password
password rules: The number of
digits is 4-12 characters, case-
sensitive, and letters and numbers
are supported.
Only super
admin
Change normal user
password
(only G203 support this)
1234#NORPWD【new password】
#NORPWD【new password】#
Change the normal user password
password rules: The number of
digits is 4-12 characters, case-
sensitive, and letters and numbers
are supported
Only super
admin
Set the relay delay time
（G202PLUS）
1234#GOT【time】#
Set the relay closing time, the relay
will follow this setting time after
closing, and then disconnect, the
delay time can be set 0-999s
Super(admin)
users
Set the relay delay time
（G203）
1234#GOT【time】#
Set the relay closing time, the relay
will follow this setting time after
closing, and then disconnect, the
delay time can be set 0-9999s
Super(admin)
users

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Check the relay delay
time
1234#GOT?
Super(admin)
users
Allow all phone number
call to access relay
1234#AA#
Allow all phone number call to
access it
Super(admin)
users
Only allow authorized
users access it
1234#AU#
Super(admin)
users
Check who can access
device
1234#AC?
Super(admin)
users
add notification push
users
（only G203 support）
1234#PUSH【phone number】#
Add Max 3 extra users to receive all
relay action feedback,(the super
admin default be the nitofication
push user), the other 2 notification
users do not be included in the
999users
Super(admin)
users
Check all notification
push users
1234#PUSHALL？
Super(admin)
users
Delete notification push
users
(only G203 support this)
1234#DELPUSH#【phone number】#
After delete, will not receive the
relay action feedback
Super(admin)
users
Allow SMS feedback
1234#R#
Default open the SMS feedback
Super(admin)
users
Do not allow SMS
feedback
1234#N#
Super(admin)
users
Check the notification
push status
1234#M?
Super(admin)
users
Modify your own phone
number
1234#MODTEL#【new phone number】#
【new phone number】#
Modify your phone number to a
new, your old phone number will
lost all permission after modified
Super(admin)
users
Remote reset
1234#RESET#
Delete all settings, the super admin
will receive one SMS to inform
reset successfuly
Only super
admin user
Remote reboot
1234#REBOOT#
Reboot the device, but
Only super
admin user

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common problem:
1.After authorized, why the device does not respone the commands or calling?
Due to the different communication methods of operators in different countries, the actual
number recognized by the device may be different. For example, your authorized number is +86
12345678, and the actual device acquisition number may be 12345678, resulting in invalid
authorization.
When the authorized number to send the instruction and dial the telephone device does not
correspond, you can use this number to send the verification instruction to the device to verify
whether the authorized number you filled in is correct. The instructions are as follows:
0000#CHECKTHEPHONE#
The device will feedback: YOUR Phone Num:XXXXXXXXX to re-authorize the number