Another variation of the TK-102 style device but with a unique command set that seems to have been created from scratch by WynnYeen. This device was not fully available in the app prior to the v1.3 release due to the command formats required.

The Geofence/stockade feature on this device uses a circular area with a radius rather than a rectangular area. It’s capabilities seem very similar to the Xexun TK 102-2 unit albeit that the SMS commands are completely different ! The geofence also includes a “time” element which may help reduce false alarms when the gps signal throws up a location glitch.

The manual for this unit is available here: GPS002 Manual

The SMS command for geo fencing for this unit looks like this:

#stockade#123456#500#60#22.312451#113.54376#

the vibration/shock sensing command looks like this:

#vibrate#grade level#password#

I believe that, as with other TK 102 units, this manufacturer also produces versions of the TK 103, TK 104, TK 105 and TK 106 that use a similar command set and may well be compatible with this device setting.

This was the first tracker that the app supported that deviated completely from the TK command set. The commands are not just variations on the TK command set but are unique to this device. It gave me a few headaches modifying the app to support it but, in so doing, it allowed the app to be more flexible for future devices.

It’s a good little device, especially for vehicle tracking (often sold as a motorbike tracker) as it’s waterproof, powered from 12v and has the ability to switch a relay that can be used to remote disable the vehicle.

It uses command numbers instead of words so 004 is used instead of stockade, for example.

The manual that I used for the device implementation is this one: TLT-2H Manual

Unlike the TK family of trackers, this one uses a circular geofence. The geofence command looks like this:

I believe this is the Xexun unit. The commands are very similar to the TK-102B with enough subtle differences to make life awkward ! It looks, on the outside, identical to the TK-102B but comes from a different manufacturer and the command set seems to match those that are listed in the Xexun manuals.

The user manual for this device is available here: TK102-2 Manual

The obvious differences in the commands between this and the TK-102B are those for the geo fence and for the shock/movement sensing. Again the TK102 is only the “baby” of the range and the same commands are also used for versions of the TK103, TK104 and TK106 etc… The TK102-2 designation is, I believe, the Xexun original for the TK102B.

If your device manual shows the geo fence format as looking like this: (no space between coordinates, compared to TK-102B)

stockade+password+space+latitude,longitude;latitude,longitude

and the shock/shake command has a sensitivity option on the end:

shake+password+space+1

This is the device that launched the app. It was buying a couple of these off Ebay that made me want to create an app to help send the SMS commands.

The device was marketed as the Byte TK 102B and is not a “genuine” Xexun TK 102 (I’m not 100% certain of the history but the consensus seems to be that Xexun were the first manufacturer to produce this unit).

The user manual for this device is available here: TK-102B Manual

The format of the commands for this unit are different to the ones that the Xexun uses and some of the later revisions of the unit.

if the manual for your unit shows the geofence command as looking something like this:

stockade+password+space+latitude,longitude+space+;latitude,longitude

t030s005n+password