Megastek S921

Megastek S921 home base station is an auxiliary device for prisoners' ankle models MT200X and MT65. If the ankle is within 15-20 meters of S921, the station will report the location (at home) to the server. Beyond this range, S921 will not be able to detect the ankle and report outdoor information. S921 is installed in a fixed position.

The device features a power off alarm, SOS emergency alarm, removal alarm, hit alarm, heartbeat package, internal battery, Wi-Fi, and more.

Protocol: megastek Manufacturer: Megastek Forum discussion
Custom Command
Send custom command to device
payload: Command payload
Read GPRS schedule upload interval
Set GPRS schedule upload interval 30 seconds