DoorBird Optional DIN-Rail Power Supply for D10X and D20X series (Certified, stabilized, built-in audio interference suppression). Click or scroll to zoom Tap to zoom by DoorBird SKU DBDINRAILPOWER This website is for Authorized Dealers only. Pricing and checkout is disabled unless you are authorized. "Login" or Click "Dealer Application" to apply. Optional DIN-Rail power supply for DoorBird IP Video Door Station D10x and D20x Series (certified, stabilized, built-in audio interference suppression)