The MT300 Wall Scanner is the ideal tool to put electricians in control when installing devices onto walls. It easily finds studs, electrical wiring and steel behind your walls, giving you accuracy on the job and avoiding having to re-fill walls after you’ve made holes in them during your installation. Tip! The MT300 would work perfectly to test your walls before installing your PIR sensors! Shop now: https://www.major-tech.com/product/wall-scanner #mtsa #wallscanner #electriciantools #smarthome