PCB Metal Detector Board with Buzzer, Adjustable, 1PC Induction Coil Buzzer and Adjustable Sensitivity for Access Control Project Builds Maker Electronics

5V Project Ready Design: Low voltage input supports common controller based electronics work, making the module practical for worktable trials, school labs, hobby circuits, and embedded prototypes Touchless Metal Detection: The induction coil senses nearby metal objects without direct touch, helping makers add compact detection to access control, model builds, and automation projects Compact PCB Module Layout: The blue board measures about 6cm / 2.36in by 6.5cm / 2.56in, with a flat coil area and wires that fit small maker electronics, security, and automation builds Adjustable Sensitivity Control: An onboard potentiometer lets users set the response for different installation spaces and short sensing distances, supporting practical setup in varied project enclosures Built In Buzzer Alert: The board includes a sound buzzer that signals when metal is detected, giving users a clear local prompt without needing an extra alarm component in setups