Telematics and Connected Mobility conference 
September 10–11, 2025 / Vilnius, Lithuania
September 10–11, 2025 / Vilnius, LithuaniaTraccar-client protocol
Protocol used by the Traccar client mobile application designed by Traccar for Android and IOS devices.
flespi parses the Traccar-client protocol messages into a JSON object with the
fields listed below in the Parameters tab.
Traccar client turns any smartphone into a GPS tracker (Android, iOS). It reports location to your own or hosted server with selected time intervals.
With the traccar-client channel, you can get the position data from your Traccar client straight into flespi.
Please note that by default, your channel will start an HTTPS server, so use "https://" prefix for the channel uri when configuring your traccar-client application on smartphone.
You can follow step-by-step instructions on how-to connect Traccar client app to flespi here.
alarm.event
boolean
Alarm event triggered
alarm
battery.charging.status
boolean
Battery charging status
charge
battery.level
number
percentage
Internal battery level
batt
channel.id
number
ID of channel that received a message
device.id
number
ID of device that received a message
device.name
string
Name of device that received a message
device.type.id
number
ID of device type of device that received a message
driver.id
string
Driver identification card id
driverUniqueId
event.type.code
string
Event Type Code
gsm.cellid
number
Mobile network (GSM, 3G, 4G, LTE, 5G, ...) base station ID
cell
gsm.lac
number
Mobile network (GSM, 3G, 4G, LTE, 5G, ...) location area code
cell
gsm.mcc
number
Mobile network (GSM, 3G, 4G, LTE, 5G, ...) country code
cell
gsm.mnc
number
Mobile network (GSM, 3G, 4G, LTE, 5G, ...) code
cell
gsm.signal.level
number
percentage
Mobile network (GSM, 3G, 4G, LTE, 5G, ...) signal strength level
cell
ident
string
Device unique identifier like serial number, IMEI, etc
movement.status
boolean
Current movement state
peer
string
IP:port from which device connecting to the channel
position.accuracy
number
meters
Position data accuracy in meters
accuracy
position.altitude
number
meters
Altitude value for position
altitude
position.direction
number
degrees
Heading angle at position detection moment
bearing,
heading
heading
position.hdop
number
Horizontal dilution of precision
hdop
position.latitude
number
degrees
Latitude coordinate value
lat
position.longitude
number
degrees
Longitude coordinate value
lon
position.mock
boolean
Indication that position information is mocked
mock
position.speed
number
km/h
Instant speed at position detection moment
speed
position.valid
boolean
Is position information accurate and valid for given timestamp
valid
protocol.id
number
ID of protocol
server.timestamp
number
seconds
Timestamp when server received a message
timestamp
number
seconds
Message timestamp
timestamp
vehicle.mileage
number
km
Total calculated mileage
wifi.mac.address
string
WiFi MAC address
wifi
wifi.signal.strength
number
WiFi signal strength, RSSI
wifi
