TMT250 Keyboard

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Keyboard functionality

A virtual keyboard is based on two configurable buttons:

  • Alarm Button ;
  • Power Button .


Each button has three click combinations and one Power Button - specific combination for power off:

  • 1 Click – button is pressed once for no longer than two seconds.
  • 2 Clicks – button is pressed for no more than two times. Time between clicks has to be shorter than one second.
  • Long Click – button in pressed and held down for two seconds.
  • 5 second-long click on Power Button - the device is turned off.

Button IO Feature

TMT250 Button IO Feature.png

Purpose of this functionality is to generate event on button click to let user know which button was clicked and what action was done (if action is configured). Events will be generated only if one (or both) buttons are selected in the Event Button Source parameter and only for selected buttons.
Button IO Feature events are generated with AVL ID 389.

Feature Settings parameter sets the priority of event:

  • Low Priority - Generates record and sends it to server with next data transmission.
  • High Priority - Generates record with High priority flag and sends event packet immediately to the server using GPRS.

Possible hexadecimal values are provided in the table below

1 Click 2 Clicks Long Click
Alarm Button 0x11 0x12 0x13
Power Button 0x21 0x22 0x23

Button Action

Available functionalities for button click combinations are provided in the table below

Name Description
None Do nothing when button is triggered
Alarm Activate Alarm scenario
ManDown On Enable ManDown scenario
ManDown Off Disable ManDown scenario
ManDown Switch Activate/Deactivate ManDown scenario
Auto Geofence On Enable Auto Geofence scenario
Auto Geofence Off Disable Auto Geofence scenario
Auto Geofence Switch Activate/Deactivate Auto Geofence scenario
Call Call to number selected in Call Action
SMS Send SMS to number selected in Send SMS to
Tracking Switch Turn on/Turn off GNSS module
Tracking On Turn on GNSS module
Tracking Off Turn off GNSS module
Movement Event Switch Activate/Deactivate Movement Event scenario
Movement Event On Enable Movement Event scenario
Movement Event Off Disable Movement Event scenario
Answer Answer incoming call
Hang-Up Hang-up when incoming call is in progress
Power Off Turn off device
Function Pause Pause ManDown and NoMovement Event scenarios