10.
• DO NOT USE
a computer to program the device that is not connected
to the protective ground. To avoid ground looping, the power supply
of the computer and the device must use the same grounding!
• DO NOT ATTEMPT
to repair the device
.
Only qualifi ed personnel is
allowed to repair the device!
• PROVIDE APPROPRIATE POWER SOURCE
for the device. The device
operates safely and properly only with a power supply which is
able to meet even the maximal requirements specifi ed in the user
manual. The exact data can be found in the user manual and on the
http://tell.hu website as well.
• DO NOT USE
the device with a power supply that does not meet the
MSZ EN 60950-1 standard!
• DO NOT REVERSE THE POLARITY
of the power supply! Wire the
power supply always according to the polarity indicated on the
device!
• DO NOT CONNECT
the GSM antenna connector to the protective
ground! Do not connect the metallic parts of the GSM antenna
connector or the module’s terminals directly or indirectly to the
protective ground, because this may damage the module!
• ATTENTION!
The product is provided with built-in automatic power
disconnection (Under Voltage Lock Out) function. Depending on the
product type, if the supply voltage drops below 8.4...8.2V, the de-
vice turns off automatically and it turns back on when the supply
voltage is at least 11.2... 11.4V.
