Liftmaster EL1SS Telephone Entry System EL1SS System provides wired communication and secure access control at the gate or door. Hardwired for power and connected directly to your existing telephone line, the EL1SS greets visitors with a high visibility back-lit keypad and attractive styling Connects directly to the existing residential home phone line so no additional monthly expenses are incurred. Easy-to-install design saves an average of 10 minutes on installation time over older models. Simple design makes it ideal for residents and visitors to communicate and grant or deny access. Stainless steel faceplate with black powder coated housing is attractive and tough. Weather-resistant and durable design is ideal for the outdoors. Remote open feature opens two entrances independently from your home or office. Do not disturb mode offers additional privacy and is activated easily on your customer's phone. Party mode is designed to conveniently hold open the entryway. 200 (4-digit) unique, programmable entry codes provide convenient assigned access. CUSTOMERS OUTSIDE THE CONTINENTAL USA MUST CONTACT US FOR A FREIGHT QUOTE PRIOR TO MAKING A PURCHASE. CONTINENTAL USA SHIPPING PRICES DO NOT APPLY TO PUERTO RICO , ALASKA, GUAM, CANADA & INTERNATIONAL.