Optocoupler Tester Module – 4-Pin Online Test Gen 3/4/5/6
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$20.73
Sale price
$20.73
Regular price
$25.70
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Optocoupler Tester Module – 4-Pin Online Test Gen 3/4/5/6
$20.73
Sale price
$20.73
Regular price
$25.70
Shipping calculated at checkout.
Optocoupler Tester Module – Fast, Accurate 4-Pin Detection Online
Whether you're a seasoned electronics technician or a passionate DIY repair enthusiast, this Optocoupler Tester Module makes verifying 4-pin optocouplers quick and straightforward. Simply connect via USB or USB-C, touch the probe to your component, and let the LED indicator tell you instantly whether the optocoupler is functioning correctly — no guesswork, no complicated setup.
Available in four generations (3rd, 4th, 5th, and 6th), each version brings incremental upgrades including Type-C connectivity, surface-mount (patch) optocoupler testing, and even a built-in flashlight with rechargeable battery in the 6th generation.
Made in Mainland China.
Key Features
- Online (In-Circuit) Testing: Test optocouplers directly on the board without desoldering — a huge time-saver during diagnostics.
- Instant LED Feedback: A flashing indicator light confirms a good optocoupler; a steady on/off state signals a fault. No meters or readings to interpret.
- 4-Pin Optocoupler Compatible: Designed specifically for standard 4-pin DIP optocouplers (through-hole). Generations 5 & 6 also support surface-mount (patch) optocouplers.
- USB / Type-C Powered: Gen 3 uses a standard USB-A interface; Gens 4, 5, and 6 use a modern Type-C connector. Gen 6 includes an onboard battery for untethered use.
- Built-in Power Indicator: Gens 4, 5, and 6 light up as soon as power is connected, so you always know the tester is ready.
- Gen 6 Flashlight: Integrated LED flashlight illuminates the work area for precision testing in low-light conditions.
- Compact PCB Design: Green PCB construction with clearly marked PIN 1 reference, making probe placement fast and accurate.
Generation Comparison
| Generation | Interface | Power LED | SMD (Patch) Test | Flashlight | Battery |
|---|---|---|---|---|---|
| 3rd Gen | USB-A | No | No | No | No |
| 4th Gen | Type-C | Yes | No | No | No |
| 5th Gen | Type-C | Yes | Yes | No | No |
| 6th Gen | Type-C | Yes | Yes | Yes | Yes |
Specifications
- Part Name: Optocoupler Tester
- Color: Green (PCB)
- Material: PCB + Electronic Components
- Compatible Component: 4-Pin DIP Optocouplers (Gens 5 & 6 also support SMD patch optocouplers)
- Power Input: USB-A (Gen 3) / Type-C (Gens 4, 5, 6)
- Origin: Made in Mainland China
How to Use
- Confirm the circuit board under test is completely powered off and that all electrolytic capacitors are fully discharged before testing. Never test on a live board.
- Identify PIN 1 of the optocoupler — it is the pin marked with a small dot. The tester board has a corresponding PIN 1 marker.
- Connect the tester to a USB power source via the appropriate cable.
- Touch the tester probe to the optocoupler. A flashing LED indicates the component is functioning correctly. Steady on or steady off indicates a fault.
- If results are inconclusive, remove the optocoupler from the board and insert it directly into the tester's DIP socket on the breadboard for confirmation.
Package Contents
- 1 × Optocoupler Tester Module (generation of your choice)
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For general guidance on electrical safety when working on circuit boards, refer to OSHA's Electrical Safety Guidelines.
Frequently Asked Questions
Q: Can this optocoupler tester check components while still soldered on the motherboard?
A: Yes — this tester is specifically designed for online (in-circuit) testing, meaning you can test 4-pin optocouplers directly on the board without desoldering them. Just ensure the board is completely powered off and capacitors are discharged before making contact with the probe.
Q: What does the flashing LED mean during testing?
A: A flashing LED indicator confirms the optocoupler is functioning correctly. If the light remains steadily on or stays completely off, the optocoupler is likely faulty and should be removed and retested in the tester's dedicated DIP socket for confirmation.
Q: Which generation should I choose?
A: If you only need basic through-hole (DIP) optocoupler testing with a simple USB connection, the 3rd generation is sufficient. For modern Type-C connectivity, choose Gen 4. If you also need to test surface-mount (SMD/patch) optocouplers, go with Gen 5 or Gen 6. The 6th generation is the most advanced, adding a built-in flashlight and onboard rechargeable battery for fully portable, untethered use.
Q: Is this tester compatible with all types of optocouplers?
A: This tester is designed for standard 4-pin DIP optocouplers. Generations 5 and 6 additionally support surface-mount (patch) 4-pin optocouplers. Other optocoupler types (e.g., 6-pin, 8-pin) are not currently supported.
Details
This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.
Shipping & Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.
We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.
