GSM-R4-DIN_EN (Version 1.02; 2016-04-06)
Page #5 of 5
10.
Frequently Asked Questions (FAQ)
What is necessary to use the
GSM
rele
4
Good quality GSM signal in a place where
GSM rele
4
will be used (at least 2 bars on your mobile phone)
Sufficient credit on a pre-paid SIM card
No phone call redirection
The user has to know to operate his mobile phone (PIN usage deactivation)
Note: Users who knows to operate older version of GSM RELAY version 2 can use older SMS command form: E.g. 1234 ON3 OFF4
Problem description
Possible reason
Solution
LED GSM (blue ) flashes 1:1 (slow)
SIM card is not functional
New SIM card is not
activated yet
Low credit on a pre-paid
SIM card
Test the SIM card in your mobile phone. Try to make a call and receive a call from another mobile phone.
Try to send a receive SMS message.
Switch off using PIN on a SIM card. Cancel all call redirection for a SIM card. (Ask your mobile operator
for help if necessary)
New SIM card has to be activated. (Ask your mobile operator for help if necessary)
Check credit on a pre-paid SIM card
(Ask your mobile operator for help if necessary)
LED GSM (blue) is off (dark)
LED ERROR (red) is on
(lights permanently)
Weak/poor GSM signal
Test the SIM card in your mobile phone. The mobile phone should show the signal level at least 2 bars
The pulse on an output is not generated
based on incoming ring signal (e. g. for
a gate opening)
The incoming phone calls
for a SIM card are
redirected
Cancel all phone call redirections for the SIM card
The temperature from an external
temperature sensor is wrong
Too long lines to an
external temperature
sensor
The accuracy of temperature depends on a line length to an external temperature sensor (16 Ohms
means 1°C). Use thicker wires to temperature sensor
