The LEF-3L is a compact 3-call master station able to communicate with three other stations, plus selectively release doors and control external devices. CCTV cameras, lights, or other devices can be activated through a relay, which is triggered when a communication channel is selected. The master station is equipped with a door release button to activate electric strikes or magnetic locks. Product Type: Intercom Master Station Product Type: Intercom Master Station Manufacturer Part Number: LEF-3L Limited Warranty: 1 Year Form Factor: Wall Mount Form Factor: Desktop Form Factor: Wall Mount Form Factor: Desktop Manufacturer: Aiphone Co., Ltd Product Model: LEF-3L Product Name: LEF-3L Intercom Master Station Brand Name: Aiphone Brand Name: Aiphone Height: 7.1 Width: 5.6 Depth: 2.2