Features High Quality 5V 1-Channel Relay Module: This module offers high-quality performance with a 5V power supply and 1-channel bistable self-locking relay, ensuring reliable and efficient . Convenient Trigger Control: Easily activate the relay by clicking the trigger port to pull it in and hold, and click again to disconnect, providing convenient and intuitive control. and Long Service Life: Constructed with high-quality materials, this relay module is and has a long service life, ensuring lasting reliability for your applications. High Accuracy and Strong Stability: With high accuracy and strong stability, this relay module is easy to install and use, delivering and reliable performance for various applications. Safe Low Pulse Trigger: The trigger mode is a low pulse trigger, providing a more convenient and safer for your peace of mind. Features: 1、Made of aluminum alloy, anodized , and not easy to rust. 2、6mm, 8mm and 10mm Cr12 metal drilling bushing, wear resistance. 3、A hand-held puncher is used to punch holes in the board and the edge of the board so that the board can be joined together. 4、Two claws design is convenient for rapid positioning of drilling center, drilling maximum thickness is 46mm. 5、Compact size and light weight, easy to use and carry. Specification: Features: Made of aluminum alloy, anodized , and not easy to rust. 6mm, 8mm and 10mm Cr12 metal drilling bushing, wear resistance. A hand-held puncher is used to punch holes in the board and the edge of the board so that the board can be joined together. Two claws design is convenient for rapid positioning of drilling center, drilling maximum thickness is 46mm. Compact size and light weight, easy to use and carry. Specification: Condition: 100% brand new Drilling maximum thickness: Approx. 46mm / 1.8in Package List: 1 x Hole Locator 4 x Drilling Bushing (6mm, 8mm, 10mm) Package List