Telemetry Packet

Field	Size (bits)	Bit Range	Description	Breakdown
Header (10 bytes)
Start byte	8	0–7	Starting character $ (ASCII value 36)	$
Data length	12	08–19	2-byte length of the data following the header
Num of data packets	5	20–24	Number of packets (0–32)	0–32
IMEI	50	25–74	Unique device identifier	e.g., 887744556677882
packet type	5	75–79	Integer type: 00 - Device Info Packet 01 - Telemetry Packet 02 - OTA Packet 03 - Error Packet 04 - Device Configuration Packet 05 - IP Configuration Packet	01 - Telemetry Packet
Data (= 55 bytes × number of packets)
Packet Status	1	80	Type of packet	0:History, 1:Live
Frame Number	16	81-96	Frame number
AlertID	5	97–101	Alert identifier
Operator	4	102–105	Network operator	00-Airtel, 01-BSNL, 02-VI, 04-JIO
Signal Strength	5	106–110	Signal strength	Integer (0–31)
MCC	10	111–120	Mobile country code	Integer
MNC	10	121–130	Mobile network code	Integer
Cell Id	16	131–146	Cell tower ID	Integer
Location Area Code	16	147–162	Location area code	Integer
Fix_status	1	163	GPS fix status	0: No fix, 1: Valid Fix
Latitude	29	164–192	Latitude coordinate	Divide by 1,000,000 for float value
NS_Indication	1	193	N or S	0: N, 1: S
Longitude	29	194–222	Longitude coordinate	Divide by 1,000,000 for float value
EW_Indication	1	223	East/West Indication	0: E, 1: W
HDOP	10	224–233	Horizontal dilution	Divide by 10 for float value
PDOP	10	234–243	Position dilution	Divide by 10 for float value
Speed	15	244–258	Speed in km/h	Divide by 10 for float value
Altitude	15	259–273	Altitude in meters	Divide by 10 for float value
Power Status	1	274	Power connection status	0: Power disconnected, 1: Power connected
Ignition Status	1	275	Ignition status	0: OFF, 1: ON
Immobilizer Status	1	276	Immobilizer status	0: OFF, 1: ON
Tamper detection	1	277	Wire Tamper detection	0: Tamper alert OFF, 1: Tamper alert ON
Supply Voltage	10	278–287	Supply voltage	Divide by 10 for float value
Internal Battery Voltage	6	288–293	Internal battery voltage	Divide by 10 for float value
FuelSensorstatus 1	1	294	Status of fuel sensor 1	1 if connected, 0 if not connected
Fuel Percentage 1	10	295–304	Fuel level percentage	Divide by 10 for float value
Fuel SensorValue 1	16	305–320	Fuel sensor value	Divide by 10 if float
FuelSensorstatus 2	1	321	Status of fuel sensor 2	1 if connected, 0 if not connected
Fuel Percentage 2	10	322–331	Fuel level percentage	Divide by 10 for float value
Fuel SensorValue 2	16	332–347	Fuel sensor value	Divide by 10 if float
FuelSensorstatus 3	1	348	Status of fuel sensor 3	1 if connected, 0 if not connected
Fuel Percentage 3	16	349–358	Fuel sensor value	Divide by 10 if float
Fuel SensorValue 3	16	359–374	Fuel level percentage	Divide by 10 for float value
Analog Input 1	10	375–384	Analog input	Divide by 10 for float value
Analog Input 2	10	385–394	Analog input 1	Divide by 10 for float value
Digital Input 1	1	395	Digital input 1	0 or 1
Digital Input 2	1	396	Digital input 2	0 or 1
Digital Output 1	1	397	Digital output 1	0 or 1
Digital Output 2	1	398	Digital output 2	0 or 1
Temperature sensor status 1	1	399	Status of temperature sensor 1	1 if connected, 0 if not connected
Temperature 1	12	400–411	Temperature in °C	Signed, divide by 10 for decimal value
Temperature sensor status 2	1	412	Status of temperature sensor 2	1 if connected, 0 if not connected
Temperature 2	12	413–424	Temperature in °C	Signed, divide by 10 for decimal value
Temperature sensor status 3	1	425	Status of temperature sensor 3	1 if connected, 0 if not connected
Temperature 3	12	426–437	Temperature in °C	Signed, divide by 10 for decimal value
Humidity	7	438–444	Humidity percentage	Integer value
Odometer	35	445–479	Odometer value in meters
DateTime UTC	32	480–511	UTC Timestamp	UTC time in seconds
TimeZone	8	512–519	Timezone in quarter-hours (e.g., 22 = +5:30). Each unit = 15 mins. Value 22 = 22 × 15 mins = 330 mins = +5:30 Range: -48 to 56, 2's complement ||
Tail
End Character	8	0–7	Starting character * (ASCII value 42)	*
CRC	8	8–15	8-bit XOR CRC of data starting from $ to * (excluding $ and *)

Sample Packet

HEX "240370e21aeb7abfd5818011047aca0260081b780000000000000000000000000000307890000000000000000000000000000000000000000000000068a7f192162abf"
JSON
{"imei": 862942074896044, "packet_type": 1, "no_packets": 1, "packet_status": 1, "frame_number": 34, "alert_id": 1, "operator": 1, "signal_strength": 29, "mcc": 404, "mnc": 19, "cell_id": 64, "lac": 56256, "fix_status": 0, "latitude": 0.0, "latitude_dir": 0, "longitude": 0.0, "longitude_dir": 0, "hdop": 0.0, "pdop": 0.0, "speed": 0.0, "altitude": 0.0, "power": 1, "ignition": 1, "immobilizer": 0, "tamper": 0, "supply_volatge": 12.0, "internal_battery_volatge": 3.6, "fuel_sensor_status_1": 0, "fuel_percentage_1": 0.0, "fuel_value_sensor_1": 0, "fuel_sensor_status_2": 0, "fuel_percentage_2": 0.0, "fuel_value_sensor_2": 0, "fuel_sensor_status_3": 0, "fuel_percentage_3": 0.0, "fuel_value_sensor_3": 0, "analog_input1": 0.0, "analog_input2": 0.0, "digital_input1": 0, "digital_input2": 0, "digital_output1": 0, "digital_output2": 0, "temp_sensor_status_1": 0, "temperature_1": 0.0, "temp_sensor_status_2": 0, "temperature_2": 0.0, "temp_sensor_status_3": 0, "temperature_3": 0.0, "humidity": 0, "odometer": 0, "dateTime": 1755836818, "timezone": 22, "dateTime_tz": "2025-08-22 09:56:58", "error_code": 0
}

Telemetry Packet Parser

Parse Packet

Parsed Output:

Field	Value