OBD‑II Diagnostic Dongle

Overview

SGT OBD-II Dongle is a plug-and-play diagnostic dongle that taps into a vehicle’s OBD-II port to read live engine data (RPM, speed, coolant, MAF, throttle, fuel), DTC fault codes, trip-by-trip fuel economy and odometer — streaming over Bluetooth to a smartphone and/or cellular to the cloud.

Built for workshops, fleet managers and owner-operators who want a quick, non-invasive view into vehicle health — no wiring, no installer needed. Plug it in, pair the app, and within 60 seconds you’re reading live PIDs and fault codes.

Plug-and-play — installs in 60 seconds, no wiring
Live PIDs — RPM, speed, coolant, throttle, MAF, O2, fuel rate and 50+ more
DTC scan & clear — read fault codes with description; clear after repair
Cellular or BLE — phone-paired for owners, cellular for fleets

How It Works

Plug — the dongle slots into the OBD-II port (driver footwell on most vehicles).
Power — it draws power from the port, boots in < 5 s, status LEDs confirm CAN handshake.
Stream — the dongle polls PIDs every 1-5 s and forwards over BLE to a phone app or LTE to the cloud.
Analyze — the cloud builds trip logs, fuel-economy trends, DTC history; AI predicts service due based on usage.

Features

Live engine data — 50+ standard PIDs; manufacturer-specific PIDs on supported makes
DTC management — read, decode, clear; history with timestamps and trip context
Trip log — start/end address, distance, duration, fuel, max speed, idle time
Fuel economy — calculated and CAN-reported L/100 km, weekly / monthly trends
Service reminder — distance-based, time-based, or AI-predicted
Geo-location — phone GPS or cellular-side tower triangulation for fleet variant
Multi-driver — driver-app pairing identifies the trip owner
Open data export — CSV, JSON, REST for workshop / fleet software integration

Use Cases

Workshop diagnostics — quick scan on intake, before/after repair comparison
Owner-operator — see fault before the MIL lamp scares the customer
Small fleet — 5-50 vehicles where full telematics is overkill
Driver training / scorecard — combine PIDs + GPS for harsh-event detection
Insurance UBI — usage-based insurance with mileage and driving-style data
EV / hybrid monitoring — supports OBD-II PIDs on most EVs (battery SoC, temp)

Specifications

Protocols: ISO 15765 CAN (250/500 kbps), ISO 14230 KWP, ISO 9141, J1850 PWM/VPW
Connector: SAE J1962 OBD-II, 16-pin, retention clip
Wireless: BLE 5.0 (BLE variant) or BLE + 4G LTE Cat-M1 (Cellular variant)
Power: Vehicle 12/24 V via OBD pin 16; low-power sleep < 5 mA
Storage: 4 MB internal, 30 days of PID + DTC offline buffer
Security: AES-128 BLE pairing, TLS 1.3 to cloud, signed firmware
Compatibility: Vehicles 2008+ (US/EU), 2010+ (Asia); HD truck J1939 add-on optional
Form factor: 55×45×25 mm, low-profile, operating -20 to +70 °C