MeiTrack VT300 - Immediate Output Control; Conditional Output Control

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12.1 Output Control (Immediate)
Command: W******,020,1,F
Description: Send this command to control the Output of VT300
Note:
F=0, to close the output (open drain);
F=1, to open the output (low voltage).
Example: W000000,020,1,1
Once the relay is properly installed, send this command to stop the engine.
12.2 Output Control (Conditional)
Command: W******,120,F or W******,220,F
Description: Send this command to control the Output of VT300. This command is only workable when the
speed is below 10km/h(command 120) or 20km/h(command 220) and GPS is available.
Note:
F=0, to close the output (open drain);
F=1, to open the output (low voltage).
Example:
W000000,120,1
W000000,220,1
Once the relay is properly installed, send this command to VT300. When its speed reaches at 10km/h or
20km/h, it will stop the engine.
13. Heading Change Report
Command: W******,036,degree
Description When the heading direction of the tracker changes over the preset degree, a message with
location data will be sent back to the server by GPRS. This enhances the accuracy when the tracker makes
a direction change.
Note:
degree=0, to turn off this function;
degree=[1,360], to set degree of direction change.
Example: W000000,036,90
When the tracker turns more than 90 degree, a message will be sent back to the server.
14. Heartbeat
Command: W******,015,data
Description: Set an interval for heartbeat.
Note:
data is the interval in unit of minutes.