Megastek MT200X

Megastek MT200X is a parolee and prisoner GPS Tracker with a metal wristband. The device features LTE connectivity support, a 1900mAh Li-Pol battery, SOS button, IP68 waterproof casing, SOS emergency alarm, low battery alarm, geofence alarm, belt on/off alarm, two-way voice communication, voice monitoring, and more.

Protocol: megastek Manufacturer: Megastek Forum discussion
Properties
Upload Interval
upload_interval
Set/read GPRS scheduled upload interval
interval: Upload Interval
Properties
Custom Command
custom
Send custom command to device
payload: Command payload
Read GPRS schedule upload interval
{"payload":"R005"}
Set GPRS schedule upload interval 30 seconds
{"payload":"W005,1"}