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GPS tracker

DNT LW-ATS LoRaWAN decoder and payload format

The DNT LW-ATS is a LoRaWAN GPS tracker that reports acceleration and GPS position. It is rated IP44 and it works from -20 to 55 °C.

DNT LW-ATS
Official decoderProduct page

Payload format

An uplink from the device as it arrives at the network server, and what the official decoder returns for it. Examples come from the decoder's own test cases.

Example 1 · fPort 10

Payload (hex)

C3 22 80 6E 2C 03 C7 D2 72 00 00 0A 00 18 0D 05 04

Decoded (JSON)

{
  "gnss": {
    "altitude": 10,
    "hdop": 0.96,
    "latitude": 53.24352,
    "longitude": 7.525063,
    "ttf": 26
  },
  "gnss_info": "Data_DD",
  "qos_state": "Almost full",
  "reason": "Cycle",
  "voltage": 4.06
}
FieldValue
gnss.altitude10
gnss.hdop0.96
gnss.latitude53.24352
gnss.longitude7.525063
gnss.ttf26
gnss_infoData_DD
qos_stateAlmost full
reasonCycle
voltage4.06

Example 2 · fPort 10

Payload (hex)

C3 01 00 00 0B 00 00 00 00 00 77 0F

Decoded (JSON)

{
  "average_ttf": 30,
  "false_activations": 119,
  "gps_activations": 11,
  "gps_timeouts": 0,
  "reason": "Heartbeat",
  "voltage": 4.06
}
FieldValue
average_ttf30
false_activations119
gps_activations11
gps_timeouts0
reasonHeartbeat
voltage4.06

Specifications

Manufacturer
DNT
Model
LW-ATS
Type
GPS tracker
Measures
acceleration, GPS position
Protection
IP44
Operating temperature
-20 … 55 °C
LoRaWAN regions
EU863-870

Connect it to Cloud Studio IoT

  1. 1

    Register the device in your network server

    Add it to The Things Stack, ChirpStack, Actility ThingPark or LORIOT with its DevEUI, JoinEUI and AppKey and the frequency plan of your region.

  2. 2

    Apply the decoder

    In The Things Stack, pick the model from the device repository and its decoder is applied for you. In ChirpStack v4, paste the official decoder as the device profile's JavaScript codec.

  3. 3

    Connect the network server to Cloud Studio IoT

    Set up the integration once per network server; every device registered there then reaches Cloud Studio IoT with its decoded values.

  4. 4

    Build dashboards and alarms

    The decoded fields become device variables for dashboards, alarms by email or SMS, and scheduled reports.

See your DNT LW-ATS on a dashboard

Start a free trial, add the device with its DevEUI and get dashboards and alarms from its next uplink.

Talk to us

Frequently asked questions

Device facts and decoder examples: The Things Network Device Repository (Apache-2.0) · commit 7693223, imported 2026-10-05.