AUTOOL BT280 · FLAGSHIP 7-IN-1 SMART ELECTRICAL ANALYZER
AUTOOL BT280 Smart Automotive Circuit Tester, Oscilloscope & Component Activator
View live sensor waveforms on the color oscilloscope, supply 0–5V reference voltages, pulse fuel injectors in 4 modes, test 4/5-pin relays, and activate vehicle components with adjustable 1–18A overload protection.
- Oscilloscope + Multimeter
- 0-5V Sensor Supply
- Injector & Relay Test

Engineered for Professional Workshop Demands
The AUTOOL BT280 is built to deliver speed, accuracy, and durability in busy service bays.

Smart Auto-Detection & Full Multimeter
Automatically identifies DC voltage (0.1–100V) and resistance (0–10MΩ) in Smart Mode, or measures VDC, current (AMP), frequency (Hz), diode, continuity, and polarity.
Real-Time Oscilloscope Waveform Graphing
Plots live voltage waveforms over time to diagnose erratic camshaft/crankshaft sensors, O2 sensors, PWM actuators, and alternator ripple.
0–5V Adjustable Sensor Power Supply
Outputs a clean, current-limited (≤100mA) 0V to 5V DC signal to verify ECU sensor reference wiring (MAP, MAF, TPS) without risking module damage.
Fuel Injector Pulse, Relay Test & Component Activation
Pulses injectors across 4 duty modes (MOD1–MOD4), tests 4/5-pin relays (pins 30, 85, 86, 87) with visual schematics, and powers blowers, pumps, and lights directly.

PROTECTED COMPONENT ACTIVATION
Power Up Fuel Pumps, Fans & Motors Directly at the Probe Tip
Instantly determine whether a component is dead or suffering from open wiring by sending battery positive (+) or ground (-) straight from the probe tip in Momentary, Latch, or Alternate mode.
- Programmable 1A to 18A electronic circuit breaker prevents melted wires
- Audible buzzer and red/green polarity LEDs confirm circuit state
- Safely activates starter solenoids, window regulators, cooling fans, and bulbs

INJECTOR & RELAY TEST LAB
4-Mode Injector Driver & Visual Relay Pinout Verification
Connect the included adapter leads to pulse fuel injectors in MOD1–MOD4 patterns or verify 4-pin and 5-pin automotive relays right on screen.
- MOD 1 (Single pulse), MOD 2 (Short rapid), MOD 3 (Long pulse), MOD 4 (Continuous)
- On-screen relay pinout diagram (30, 85, 86, 87) shows live contact switching
- 0–5V supply mode triggers alarm if load exceeds 100mA

ERGONOMIC WORKSHOP KIT
2.4" Color TFT Display, Dual LED Headlights & USB Upgradable
Designed for bumper-to-bumper diagnostics on 12V cars and 24V trucks, complete with a heavy-duty extension harness and blow-molded carrying case.
- Customizable UI background themes and multi-language menu (including Turkish & English)
- USB port for PC firmware updates
- Complete accessory kit stored in a rugged hard case
Detailed Visual & Technical Infographic Showcase
Close-up hardware details and application scenes of the AUTOOL BT280.
Technical Specifications & Hardware Parameters
Complete manufacturer-verified technical data and operating ranges.
| Brand / Model | AUTOOL BT280 Smart Circuit Tester |
|---|---|
| Operating Voltage | 9V – 30V DC (12V & 24V Vehicle Systems) |
| DC Voltage Range | 0.1V – 100V DC |
| Resistance Range | 0 Ω – 10 MΩ |
| Frequency Range | 0 Hz – 10 KHz |
| Adjustable Breaker | 1A – 18A Digital Overload Protection |
| 0-5V Power Supply | 0V – 5V DC Adjustable (Current Limit ≤100mA) |
|---|---|
| Injector Test Modes | 4 Pulse Modes (MOD1 / MOD2 / MOD3 / MOD4) |
| Diagnostic Functions | Oscilloscope, Smart Test, Relay Test, P-N, Diode |
| Display & Lighting | 2.4" Color TFT LCD + Dual Front LED Worklights |
| Languages & Updates | Multi-Language (TR/EN) · USB Upgradable |
| Warranty | 1-Year Official Otoeko Warranty |
Workshop Application & Operating Guide
Recommended 4-step standard operating procedure for accurate results.
Connect to Vehicle Battery
Clip the red and black clamps to the 12V or 24V vehicle battery and select your desired mode on the 2.4" TFT screen.
Probe with Smart Mode or Scope
Touch the probe tip to any circuit to automatically read voltage/resistance or plot live sensor waveforms.
Simulate 0-5V or Activate Components
Set a 0–5V output to test ECU signal integrity, or set the 1–18A breaker limit to activate motors and lights.
Run Injector & Relay Diagnostics
Attach the dedicated relay or injector lead to test relay switching and fuel injector pulsing in seconds.
Conventional Methods vs. Professional Diagnostics
How precision engineering eliminates guesswork and comebacks.
Conventional / Basic Methods
- Incandescent test lights can overload and damage modern ECUs
- Standard multimeters cannot activate components or pulse injectors
- Entry-level probes (like BT160/BT260) lack Oscilloscope, 0-5V supply, Injector & Relay modes
- Fixed-amp breakers cannot be dialed down for delicate circuits
With AUTOOL BT280
- ECU-safe high-impedance probing plus 0–5V ≤100mA sensor supply
- Instant Momentary/Latch/Alternate component activation
- Integrated Oscilloscope, 4-Mode Injector Tester & Relay Analyzer
- Programmable 1A–18A electronic circuit breaker protection

Package Contents — Ready for the Workshop
Complete factory kit inspected prior to dispatch.
- 1 × AUTOOL BT280 Smart Automotive Circuit Tester Main Unit
- 1 × Heavy-Duty Battery Clamp Harness & Long Extension Cable
- 1 × Relay Test Lead & Fuel Injector Test Adapter
- 1 × Solid Copper Probe Tips, Cigarette Lighter Adapter, USB Cable & Hard Case
1 Year Official Otoeko Warranty
The AUTOOL BT280 is backed by a 1 Year official Otoeko warranty against manufacturing defects, with full technical support.
Frequently Asked Questions
Key technical questions from technicians and workshops about the AUTOOL BT280.
How does AUTOOL BT280 differ from BT260?
BT280 is the flagship model adding a Live Oscilloscope, 0–5V Adjustable Sensor Power Supply, 4-Mode Fuel Injector Tester, Dedicated Relay Tester, Smart Auto-Detection Mode, and a programmable 1A–18A digital circuit breaker.
What is the 0–5V Power Supply mode used for?
It generates a clean 0V to 5V reference voltage (limited to 100mA) so you can simulate sensor outputs (MAP, MAF, TPS) to the ECU and verify wiring integrity on your scan tool.
Is component activation safe if the circuit is shorted?
Yes, the programmable 1A–18A electronic circuit breaker trips immediately if current exceeds your preset threshold.
How does the fuel injector test work?
BT280 outputs 4 selectable pulse patterns (MOD1–MOD4) directly to the fuel injector connector so you can listen for solenoid clicking or observe spray patterns.
Does it work on 24V heavy-duty trucks?
Yes, it supports 9V to 30V DC systems across both 12V passenger cars and 24V trucks.
What warranty is included?
Backed by a 1-year official Otoeko distributor warranty.










