The hassle-free WL-11 Wireless Video Intercom offers easy installation and operation. The WL-11 is DECT wireless, so no wiring is needed. The 1.9 GHz band frequency enables you to receive calls from the door without interference from home appliances on other frequencies. AIPHONE™ is proud to be a rare, two-time winner of the prestigious Deming Prize for quality management and manufacturing processes. Our ISO Certified process and rigorous standards result in some of the most reliable products in the industry. Aiphone products routinely last for years, only being replaced when the application outgrows the system capacity.