Buying guide · Basics · 9 min read
What an ELM327 is, its versions and which to buy
The small adapter that turns your phone into a fault-code reader. What is behind the name, why almost all of them are clones and which one suits you.

Bluetooth adapter · To get started
Bluetooth OBD2 adapter to read and clear fault codes and see live engine data on an Android phone or a PC.
€8.60 VAT included · Satkit price checked on 7 October 2026
Prices incl. VAT checked on 7 October 2026; they may change.
The simplest adapter to get started: plug it into the car's OBD2 port and pair it over Bluetooth with your phone or laptop.
iPhone users
iOS does not support classic Bluetooth, so this model will not work with an iPhone or iPad. You need a Wi-Fi or Bluetooth LE adapter instead.
PIC18F25K80 chip
Inside there is a PIC18F25K80 microcontroller, the same one in every unbranded ELM327 Satkit sells. It is the chip found in the clones that diagnostic forums rate best: a programmable microcontroller from the same family (PIC18) as the original ELM327, usually running firmware based on the original 1.4.
Related guide
Buying guide · Basics · 9 min read
The small adapter that turns your phone into a fault-code reader. What is behind the name, why almost all of them are clones and which one suits you.
Practical guide · Apps · 12 min read
The adapter does nothing on its own: what you see on screen depends on the app. Which ones exist for each system, what they cost, which adapter they work with and how to do the most common jobs step by step.
Comparison · Bluetooth
All three Bluetooth ELM327 adapters use the PIC18F25K80 chip. The real differences in size, price and compatibility, and which one suits your car.
Comparison · Connection type
Bluetooth, Wi-Fi or USB: the same PIC18F25K80 ELM327 with three connections. What each one works with, pros, cons and which one suits you.
Comparison · Bluetooth for Android
Generic ELM327 Bluetooth v1.5 with a PIC18F25K80 chip against the branded Konnwei KW903: protocols, automatic power-off, size and price.
Comparison · Motorcycles
MotoScan, Biketune and TuneECU head to head: which phone they run on, which motorcycles they cover, what they do with an ELM327 and what they cost.
Comparison · BMW and MINI
vLinker BM+ against a generic ELM327 on a BMW or MINI: BimmerCode and BimmerLink, iPhone or Android, and what you can do with each one.

Bluetooth adapter · Basic
The simplest ELM327 Bluetooth v2.1, with status lights: reads and clears engine fault codes on Android or Windows, but does not work with every car.

Bluetooth adapter · Mini size
Mini-size ELM327 Bluetooth, version v2.1: reads and clears engine fault codes and shows basic live data on an Android phone or a PC.

Bluetooth adapter · Konnwei brand
Konnwei Bluetooth OBD2 adapter for Android and Windows, with all five OBD2 protocols and automatic power-off when idle.