The A88 Metal Detector Module is a compact, non-contact electromagnetic induction sensor designed to find metallic objects at a very close range. It is widely used by hobbyists for DIY electronic kits, robotics, and small automation projects.Technical Specifications

• Operating Voltage: 3V to 5V DC (5V DC recommended for optimal performance).
• Detection Distance: Up to 10 mm (1 cm).
• Operating Current: 40 mA.
• Standby Current: 5 mA.