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、Sturdy and Lightweight: The small square is made from an excellent industrial grade aluminium alloy, which is strong and lightweight, resistant to breakage and easy to use and carry. 2、Anodised Finish: The small square has an anodised red finish that maintains excellent finish, corrosion resistance and durability. 3、Fitted with 4 Steel Sleeves: The small square is fitted with 4 steel sleeves so you don't have to worry about it wearing out when drilling or plotting centrelines, causing the pilot hole to become larger and lose accuracy. 4、Multifunctional: This small square differs from the normal straightedge in that it can be used not only as a centre scriber marking tool to draw centre lines, but also as a self centring pin drilling guide jig to drill straight centre holes. 5、Quick Drilling: This small square contains 2 pins to quickly draw the centre line and drill the centre hole, easily checking the chisel. Specification: Item Type: Small Square Material: Aluminium alloy Package List: 1 x Small Square 2 x Dowel Pin Package List 1 x Small Square 2 x Dowel Pin