Model No.: AI-M008The Tiny Wireless Hidden Camera Pinhole Kit is with 1.0mega, speak and talk two way audio function, super easy to DIY, only need a tiny hole to see through, such as behind or inside a box, book or clock with a mini hole to see through.
Battery Powered Electromagnetic Flow Meter combines a flow sensor with a battery-powered integrated electronic converter kit to provide accurate flow measurement for pipeline flow monitoring applications.
This copper mine detector can not only used to detect the condition of steel core conveyor belt in use, it can also inspect some inner fault, joint twitch. So it is now extensively used in copper mine, iron mine, diamond mine and other industries.