Is this circuit tester safe to use on sensitive vehicle computer systems and ECUs?

Yes, it is safe. The tester has a high input impedance of 10 megohms or more. This prevents drawing excess current, which protects sensitive electronic control units while you test.

Can I use this diagnostic tool on heavy-duty 48-volt commercial truck electrical systems?

No, you should not use it on 48V systems. This tool has an operating test voltage range of 6V to 24V DC. It is designed specifically for standard automotive and light powersport electrical systems.

What kind of electrical problems can I find in my car using this tool?

You can quickly find broken wiring and bad grounds. The tool also lets you activate components using the power switch to verify if motors or lights work. It makes troubleshooting fuses and relays much faster.

CNBJ-823 Automotive Circuit Tester | Digital Power Switch | Vehicle Electrical Diagnostic Tool

Name: CNBJ-823 Automotive Circuit Tester | Digital Power Switch | Vehicle Electrical Diagnostic Tool
Brand: Compel
SKU: ELEC-00167
Price: 42.95 USD
Availability: InStock

Stock #:TBS-05136

SKU:ELEC-00167

CNBJ-823 Automotive Circuit Tester | Digital Power Switch | Vehicle Electrical Diagnostic Tool - Image 1

$42.95

Ships to United States · standard est. 10-20 business days

Free standard shipping on orders over $59 (under 2kg). Express available at checkout.

ColorSelect an option

Quantity

CNBJ-823 Automotive Circuit Tester | Digital Power Switch | Vehicle Electrical Diagnostic Tool

$42.95

Fast Shipping

Secure Payment

Easy Returns

Good to know

Questions about this product

Is this circuit tester safe to use on sensitive vehicle computer systems and ECUs?: Yes, it is safe. The tester has a high input impedance of 10 megohms or more. This prevents drawing excess current, which protects sensitive electronic control units while you test.
Can I use this diagnostic tool on heavy-duty 48-volt commercial truck electrical systems?: No, you should not use it on 48V systems. This tool has an operating test voltage range of 6V to 24V DC. It is designed specifically for standard automotive and light powersport electrical systems.
What kind of electrical problems can I find in my car using this tool?: You can quickly find broken wiring and bad grounds. The tool also lets you activate components using the power switch to verify if motors or lights work. It makes troubleshooting fuses and relays much faster.

Car Electronics spec sheet (PDF)

Get a one-page sheet with full description, specifications, technical details, FAQs, price & SKU - handy to save, print, or share.

Compare options

More Car Electronics

All Car Electronics

OBD2 Scanner Diagnostic Tool | Voltage & Battery Test | V500 Code Reader

4.9

$26.95

XDNPR8GL Adapter Cable | For Xhorse Key Tool Plus | MQB-RH850/V850 VW 4th IMMO Calibration

4.7

$47.95

OBD2 Scanner Diagnostic Tool | Read & Clear Engine Codes | For 1996+ Cars

4.5(13.7K)

$31.22

VAG OBD2 Diagnostic Scanner | VCDS 25.3 HEX-V2 | Multi-Language Audi VW SKODA Support

$51.99

Explore the range

Popular in Automotive & Powersports

Browse Automotive & Powersports

-57%

Brake Caliper Piston Rewind Tool | Disc Brake Pad Replacement Kit | Heavy-Duty Service Cube

5.0

$8.95$20.68

Motorcycle Chain Maintenance Kit | Mess-Free Lubricator & Cleaner | 1-3 Set Options

5.0

$4.49

Professional-Grade 3M Double-Sided Mounting Tape | 300cm Heavy-Duty | No-Residue Removal

4.9

$6.95

Complete the set

Accessories & add-ons

-24%

Marine-Grade Switch Panel | 4/6/8-Gang Digital Display with USB Port | 12V Waterproof for Boats & RVs

5.0

$84.99$112.15

-59%

6-Gang Marine-Grade Switch Panel | 12V Waterproof Rocker Switches with Red LED Illumination

5.0

$5.95$14.47

-48%

Marine-Grade Rocker Switch Panel | 2-8 Circuit Control | Waterproof Toggle Panel for Boats & RVs

5.0

$41.95$80.35

-54%

8-Gang Marine Switch Panel | 12V/24V Power Distribution | USB Charging for RV, Boat & Van

5.0

$8.95$19.57

Tesla Jack Pads | 4-Piece Set for Model 3, Y, S, X | Protective Chassis Lift Adapters

4.9

$29.95

20A Marine-Grade Joystick Switch | 12V Waterproof Panel for Boats, RVs & Trucks

4.9

$7.95

-4%

Marine & RV Touch Switch Panel | 12V/24V Relay System | 6-12 Gang Slim Control Box

5.0

$166.99$173.79

Marine-Grade Rocker Switch Panel | 1-4 Gang Toggle | 12V/USB Power | Blue LED Backlit

4.9

$19.99

Tesla Jack Pad Set | 4-Pack Rubber Pucks with Protective Storage Case

4.9

$55.99

Wireless Winch Remote Control Electric Winch Controller with 434MHZ Receiver for Truck ATV Winch Remote Control

5.0

$40.95

-28%

Marine-Grade Switch Panel | 12V/24V Touchscreen Control with USB Charger & Voltmeter

5.0

$61.99$86.63

Heavy-Duty Tyre Pressure Gauge | 10-150 PSI | Dual Head Truck Tool

4.9(172)

$21.95

The CNBJ-823 is an advanced electric circuit tester for comprehensive vehicle electrical system diagnostics. Featuring a power switch and intuitive indicators, it quickly identifies live circuits, checks for proper voltage, and tests continuity, making it an essential tool for pinpointing electrical faults in modern automobiles. Features and Benefits - Integrated Power Switch - Allows safe and convenient activation of the probe without needing to access the vehicle's battery directly. - Clear Visual and Audible Indicators - Provides immediate, unambiguous feedback on circuit status (power, ground, continuity) for fast diagnosis. - Robust Insulated Probe and Lead - Ensures user safety when testing potentially live circuits in 12V/24V systems. - Compact and Portable Design - Fits easily in a tool pouch for quick access during roadside repairs or in the workshop. Applications - Diagnosing faulty fuses, relays, switches, and wiring issues in automotive lighting and accessory circuits. - Verifying power and ground integrity at sensors, actuators, and control modules during engine troubleshooting. - Pre-purchase vehicle inspections to assess the basic health of the electrical system.

Dimensions: Approx. 200 x 80 x 40 mm. Weight: Approx. 300 g. Power Source: Vehicle Battery (12V/24V). Operating Voltage: 12V DC, 24V DC. Display: Digital LED. Features: Power switch, Circuit continuity test, Voltage detection, Short circuit detection. Model: CNBJ-823. Product Name: CNBJ-823 Electric Circuit Tester. Type: Automotive Electrical System Diagnostic Tool. Device Dimensions (LxWxH): Approx. 150 x 70 x 30 mm. Lead Length: ≥ 1 meter. Device Weight: Approx. 200 g. Battery Type/Capacity: Lithium-ion, 3.7V, ≥ 1000mAh. Power Supply: Built-in Rechargeable Battery with On/Off Switch. Test Voltage Range: 6V - 24V DC (Standard Automotive). Operating Temperature: 0°C to 50°C. Safety Rating: CAT III 600V. Continuity Test: Audible Buzzer (< 50 Ω). Display Type: Digital LCD Screen. Input Impedance: ≥ 10 MΩ. Measurement Accuracy: ±1.5% of reading + 2 digits. Primary Function: Circuit Continuity, Voltage, and Signal Testing. Probe Type: Insulated, Back-Pinning Probes. Product Type: Automotive Electrical System Tester / Diagnostic Tool. Pulse Detection: Yes (for injectors, sensors, ignition). Q: What are the main specifications of the CNBJ-823 circuit tester? A: The CNBJ-823 is a digital automotive electrical system tester with a power switch. It is designed to test for voltage, continuity, and diagnose various electrical circuits, sensors, and components in a vehicle's 12V/24V system.. Q: How reliable and accurate is this vehicle diagnostic tool? A: It is built with a digital display for clear readings and features robust probes and wiring intended for automotive workshop environments. Proper calibration ensures accurate voltage and continuity readings for reliable diagnostics.. Q: Which vehicles and systems is this tester compatible with? A: It is compatible with most standard 12V and 24V automotive electrical systems found in cars, trucks, and motorcycles. It can test circuits for lights, sensors, switches, relays, fuses, and other basic electrical components.. Q: What warranty coverage comes with this electrical tester? A: The product is generally covered by a manufacturer's warranty that protects against defects. The specific warranty period and claim process should be confirmed with the retailer or included documentation.. Q: Does this tool represent good value for basic electrical diagnostics? A: Yes, it provides good value by offering a dedicated, easy-to-use tool for common electrical troubleshooting tasks, which can be more efficient and informative than using a basic multimeter for automotive-specific tests..

CNBJ-823 Automotive Circuit Tester | Digital Power Switch | Vehicle Electrical Diagnostic Tool

Questions about this product

More Car Electronics

OBD2 Scanner Diagnostic Tool | Voltage & Battery Test | V500 Code Reader

XDNPR8GL Adapter Cable | For Xhorse Key Tool Plus | MQB-RH850/V850 VW 4th IMMO Calibration

OBD2 Scanner Diagnostic Tool | Read & Clear Engine Codes | For 1996+ Cars

VAG OBD2 Diagnostic Scanner | VCDS 25.3 HEX-V2 | Multi-Language Audi VW SKODA Support

Popular in Automotive & Powersports

Brake Caliper Piston Rewind Tool | Disc Brake Pad Replacement Kit | Heavy-Duty Service Cube

Motorcycle Chain Maintenance Kit | Mess-Free Lubricator & Cleaner | 1-3 Set Options

Professional-Grade 3M Double-Sided Mounting Tape | 300cm Heavy-Duty | No-Residue Removal

TB2 PRO Mini Tyre Inflator | 120PSI Cordless Pump | Fast Charge, Screen Display

Car Air Pump for Car | 150PSI Portable Tyre Inflator | Motorcycle & Bicycle

12V Car Battery Charger & Maintainer | Pulse Repair Mode | Moto & Truck

Pads and Rotors Themed Car Vent Clips | Mini Drum Cymbals | Universal

12V Car Battery Charger | 2A Pulse Repair for Moto & Truck | LED Display

Plug Gap Tool | Double Hole Spanner | Engine Repair Socket Wrench

Microfiber Cloths | 40x40cm Thick Car Detailing Towels | Auto Wash Drying

Brake Bleeder Kit | 1L & 0.75L Capacity | Car & Motorcycle Use

Remote Car Starter Kit | 5000A Jump Starter | 150PSI Air Compressor

Accessories & add-ons

Marine-Grade Switch Panel | 4/6/8-Gang Digital Display with USB Port | 12V Waterproof for Boats & RVs

6-Gang Marine-Grade Switch Panel | 12V Waterproof Rocker Switches with Red LED Illumination

Marine-Grade Rocker Switch Panel | 2-8 Circuit Control | Waterproof Toggle Panel for Boats & RVs

8-Gang Marine Switch Panel | 12V/24V Power Distribution | USB Charging for RV, Boat & Van

Tesla Jack Pads | 4-Piece Set for Model 3, Y, S, X | Protective Chassis Lift Adapters

20A Marine-Grade Joystick Switch | 12V Waterproof Panel for Boats, RVs & Trucks

Marine & RV Touch Switch Panel | 12V/24V Relay System | 6-12 Gang Slim Control Box

Marine-Grade Rocker Switch Panel | 1-4 Gang Toggle | 12V/USB Power | Blue LED Backlit

Tesla Jack Pad Set | 4-Pack Rubber Pucks with Protective Storage Case

Wireless Winch Remote Control Electric Winch Controller with 434MHZ Receiver for Truck ATV Winch Remote Control

Marine-Grade Switch Panel | 12V/24V Touchscreen Control with USB Charger & Voltmeter

Heavy-Duty Tyre Pressure Gauge | 10-150 PSI | Dual Head Truck Tool