LE-840

Description of the LE-840 Transmitter – A Universal Transmitter Designed for Vehicle Telemetry with an External GPS Antenna

E-toll and SENT-GEO Certification

Power Supply: +12V / +24V (Minimum current: 15mA, Maximum current: 300mA, Average current: 50mA)

Inputs:

1 CAN input

1 universal input "controlled by ground" / analog input (range: 0–30VDC)

1 input for 1-Wire/RFID interface (driver identification/sensors)

Power input with voltage measurement

Ignition input – changes the device's operating mode

Built-in memory for storing event and location data (30,000 records)

Built-in battery: 3.7V, 320mAh

Built-in GSM/4G LTE antenna

External GPS/GLONASS antenna (SMA connector)

Programming port: Micro USB (manufacturer’s converter required)

1 universal control output

WARNING: Do not use directly to cut off the vehicle ignition circuit

Remote configuration capability via data transmission or SMS, and remote firmware updates

Built-in accelerometer: Detects motion, collisions, lifting/towing, and overloads (ECO Driving support)

Vehicle battery protection system: Automatically disconnects the transmitter when the battery voltage is low

Downloadable Files

Real-time vehicle tracking	GPS / GLONASS (external SMA antenna)
Driver identification and/or authorization via RFID / DALLAS	✔
Driver identification and/or authorization via Bluetooth (BT)	✔ (for 840+ version)
Route playback	✔
Trip history	✔
Geofencing / zone monitoring	✔
E-TOLL (electronic toll collection system)	✔
SENT GEO (Polish GPS-based monitoring system)	✔
ECO Driving (driver behavior evaluation)	✔
Reports	✔
Digital tachograph (DDD files, driver card status/number – D8)	no
Vehicle battery protection (automatic shutdown at low voltage)	✔
Alerts / Events	✔
Mileage records	✔ GPS / CAN
Vehicle start-block control	✔ (via universal output))
Remote door locking/unlocking (carsharing)	no
Black box functionality (offline storage of up to 30,000 records)	✔
Driving / parking mode switching	✔
Tow/lift detection (via built-in accelerometer)	✔

Technology	GSM, GPRS, LTE(4G), GNSS
Power supply	+12V/+24V
Current consumption (min.)	15mA
Current consumption (max.)	300mA
Current consumption (avg.)	50mA
Operating temperature range	From -30°C to +85°C
GSM antenna	Built-in
GNSS antenna	External
Dimensions (W × L × H)	67 mm × 50 mm × 20 mm (excluding antenna)
Enclosure protection class	IP30
SIM card type	Nano (4FF)
Internal data memory	30,000 records
Built-in accelerometer	Motion detection, tilt changes, and G-force detection
Programming interface	Micro USB (manufacturer’s converter required)
Battery	Built-in battery, 3.7V, 320mAh
Inputs	Power input with voltage measurement, WE1 – universal input “ground-controlled” / analog input (range 0–30VDC), Ignition input, Dallas / 1-Wire input
Interfaces	CAN, 1-Wire / UART for RFID readers, iButton keys, and Dallas digital thermometers
Control Outputs	Universal open-collector (OC) control output (GND), max current 100mA WARNING: Do not use the control output for cutting off the vehicle ignition circuit