Overspeed alarm.
SendSMS“123456speed 050”to the
unit,it will reply “SPEED ok!”. When the
unit moves exceeding 50 km/h, the unit will
send SMS alarm. When the speed is no
more than 50km/h, it will send alarm as
well. Send “123456speed 0”when needs to
cancel. Notice: Speed alarm is set at least
50km/h.
