APPEARANCE
OPERATION
GSM remote switch enables remote control of a device connected to mains 230V AC
by means of a mobile phone. The control refers to switching on or switching off power
supply by means of a relay output with maximum capacity of 16A. Two operating relay
output modes are possible:
FEATURES
● remote control of electric device operation by means of commands (incoming voice
call, SMS massages) send from a mobile phone,
● comfortable control of devices with difficult access (ventilation, heating, other),
● three operation modes (switching on, switching off, restart - contact relay position
change for adjusted time),
● easy mounting in 230V AC socket,
● operation is optically signalled (power supply, relay status, GSM modem status),
● low power consumption, possibility of constant work.
Optic signalling of input voltage
Optic signalling of GSM network
status (green)
Receiver’s switch on optic signal (red)
Manual operation of the receiver
Programming push-button
Receiver’s socket
SIM card socket
Hole plug
Power supply pin
● ON - relay on (controlled device is switched on, restart is p ossible),
● OFF - relay off (controlled device is off).
It is possible to control the relay output status by means of an SMS massage and a
connecting signal. Manual restart is an additional function - by means of a program-
ming push-button. During relay operating mode ON, it is off as long as the push-button
is pressed; in OFF mode it is on. Also the connecting signal is used to disconnect the
relay for the adjusted time (10 seconds) in ON mode or to connect the relay in OFF
mode. During usual operation the relay status can be changed by an SMS massage or
the controlled device can be restarted.
Restart by means of an incoming call
After choosing SIM card inserted in GRG-01 device it checks the incoming call number
(compulsory CLIP service at GSM operator). Next the device
makes sure the incoming call number is on the list of approved numbers and it counts
the number of signals.
Achieving adjusted value by a command (ring), GRG-01 device disconnects (mode
ON) or connects (mode OFF) the relay output for adjusted time ‚t’ and
rejects the call to inform the user about proper completion of the operation.
Relay output control by means of an SMS massage
The relay output control starts with sending an SMS massage (specified syntax mas-
sage) to the number of a SIM card inserted into GRG-01 device. Password is not
required for the SMS massages sent from telephones included in the list of approved
numbers. Otherwise the massage should start with a password established during con-
figuration phase. Next, the massage should include a command. Possible commands:
● restart - causes disconnection/connection of the relay output for the adjusted time ‚t’,
and then sends back the command with „ok” massage.
● relay ON - during operation mode OFF the relay status is changed to mode ON and
„ok” massage is sent back. If the operation mode is ON - „no change” massage is
sent back.
● relay OFF - during operation mode ON the relay status is changed to mode Off and
„ok” massage is sent back. If the operation mode is OFF - „no change” massage is
sent back.
● read config - question connected with configuration, (it is also possible in the con-
figuration mode after switching on with pressed push-button) restarter sends back
current configuration.
● relay? - question connected with relay output status. GRG-01 answer is a massage
with OFF or ON depending on current operating mode.
In order to activate GRG-01 device it is necessary to prepare SIM card without PIN or
with PIN 1111.
In order to instal SIM card it is necessary to remove ZAMEL hole plug by means of a
screwdriver. The hole plug must be slightly levered from the left.
