The YF01 optocoupler tester has been fully upgraded, adding Chinese and English switching and optocoupler detection categories. All SMD components are placed on the back to prevent dust and collision. Thank you for your continued support or feedback!

The power supply uses a fully isolated transformer to improve the anti-interference ability of the microcontroller, and 24V and 5V are independent of each other.

Please ask the seller for a PDF instruction manual first, read it before asking questions or purchasing

Note before buying: From the sales situation, the user level varies. Some users do not know what DC24V means, or do not connect or test according to the instructions. All products have been tested before delivery. If a return occurs, the buyer must pay the round-trip postage for any reason. If you do not agree, please do not buy. Thank you for your cooperation! Free shipping is only available in mainland China. Free shipping is not available in Hong Kong, Macau, Taiwan and overseas.

The product sold does not contain IC. The IC in the picture is just to show buyers how to install it correctly.

Applicable objects: Covering most commonly used IGBT drive optocouplers on inverters (24V power supply, single signal input), such as A3120, A3140, A3150, PC923, TLP250, TLP251, TLP350, TLP351, P701, A321H, H321, PC929, A316J, A330J, A331J, A332J, A325J, A329J, A339J, EXB841, M57962, etc.; the models of conversion seats are increasing........

This product is the original creation of our store. There are not many original things these days. Please do not give bad reviews without understanding them yourself. The author has been engaged in the maintenance of industrial control industry for many years and is familiar with all kinds of common optocouplers. At the same time, we also welcome criticism and correction from industrial control enthusiasts.

Input power: DC24V

FAULT key - artificially simulates the generation of fault signal detection and alarm function

RUN button - Run

STOP button - stop