... Bank/Box Office/Window intercom Kits talk though glass system CE Certificate two way interphone for window service Factory price! Bank/Box ... Office/Window intercom Kits(CE certificate E-320) E320 Bank/Box Office/Window intercom Kits ... 5 days via DHL .EMS ,UPS ,TNT, FEDEX ExpressWarranty:12 Months Factory price! Bank/Box Office/Window intercom Kits(CE certificate E- ...