Continuity Tester Green LED Electronic Fault Finder Pen Line Checker (Battery Powered, DC Only)

Specifications  

• Continuity Tester Green LED
• Type: Battery-Powered Continuity Tester Pen (LED Only)  
• Indication: Bright Green LED  
• Power: 3 × LR41 / AG3 button cell batteries (included)  
• Probe: Sharp metal tip + alligator clip probe  
• Cable Length: ~60cm flexible wire  
• Voltage Range: 0–50V DC (safe for low voltage only)  
• Current Draw on Circuit: Almost zero  
• Response Time: Instant  
• Body Material: Transparent plastic  
• Weight: ~25g  
• Battery Life: 1000+ tests 

Features  

• Ultra-simple operation: Touch two points → Green LED lights up instantly if continuity exists
• No buzzer – silent green LED indication only
• Powered by 3 × small button cell batteries (LR41/AG3 included)
• Super bright green LED visible even in daylight
• Sharp stainless steel probe + flexible black probe with alligator clip
• Lightweight pen-style body with pocket clip
• Zero current draw on tested circuit – completely safe for sensitive electronics
• Instant response (<1ms)
• Ideal for PCB track checking, broken wire detection, fuse testing
• Works on any DC/low-voltage circuit (0–50V safe)
• This is the simplest and fastest continuity tester you’ll ever use!
• Just open the cap, insert the 3 tiny button cells (already included), touch the sharp probe and the alligator clip to any two points – if the line is continuous, the bright green LED lights up immediately. No continuity = no light. That’s it!
• Perfect for quickly checking PCB tracks, finding broken wires inside cables, testing fuses, switches, relays, or tracing short circuits on boards. Because it draws virtually zero current from the tested circuit, it’s 100% safe for Arduino, ESP32, sensors, and all delicate electronics.
• No annoying buzzer – just a clean, silent green glow when the path is good. Compact pen design fits in your pocket, and the transparent body lets you see the batteries inside.

What is the price of Continuity Tester Green LED Electronic Fault Finder Pen Line Checker (Battery Powered, DC Only) in Bangladesh?

The latest price of Continuity Tester Green LED Electronic in Bangladesh is Price: ৳249.00 taka for 1Pcs . You can buy this product at better and cheaper price from our website and also you can visit our warehouse between work hours 10am to 8pm.

Buy Continuity Tester Green LED Electronic Fault Finder Pen Line Checker (Battery Powered, DC Only) in Bangladesh from online at Dunia.com.bd.

In Bangladesh, you can get original Continuity Tester Green LED Electronic From Dunia.com.bd . We have few collection of latest ডিটেক্টর & টেস্টার মডিউল to purchase. Order ইলেকট্রনিক মডিউল Online at our website Or Visit our warehouse to get your product at lowest price.

FAQ

1. Does this continuity tester have a buzzer?
   No, this version has only a bright green LED – completely silent, no buzzer.
2. What kind of batteries does it use?
   It runs on 3 × LR41 (AG3) button cell batteries – all three are included in the package.
3. Can I use it on 220V AC mains?
   Absolutely NOT! This tester is for low-voltage DC circuits only (0–50V max). Using on AC is dangerous and will damage it.
4. Why doesn’t the green LED light up?
   Either the two points have no continuity (broken line), or the batteries are dead/weak.
5. Is it safe to use on Arduino, ESP32, or other microcontroller boards?
   Yes, 100% safe – it draws almost zero current from the tested circuit.
6. How long do the batteries last?
   Easily 1000+ tests on a single set of batteries.
7. Does polarity matter when touching the probes?
   No, you can connect the probes in any direction – LED will light if there is continuity.
8. Can it test fuses, switches, or relays?
   Yes, perfect for quickly checking fuses, switch contacts, relay coils, etc.
9. Is it waterproof?
   The probes are metal and the body is plastic – avoid soaking, but light splashes are okay if dried immediately.
10. What is the warranty?
    3 months replacement warranty (batteries not covered).