Quark-elec Manual
https://www.quark-elec.com
7 of 28
2018
V3
5. Status LED’S
The device has two working LED’s to notify the user of its operations.
Blue Network LED –
Blue LED will flash at start up as it looks for a network signal. Once a signal has
been found the LED will flash much slower, every 3 seconds.
Red System led –
Red led will flash at 1 second intervals once the system has finished initialization.
It will not flash while it is processing a command.
Remember, the device processes one command at a time. Each command will have a reply to
confirm the command has been received and executed. You must wait for a reply message before
sending another command.
All SMS text commands must always be sent using CAPITAL
letters. Do not add spaces or any other characters.
