Product Name: China Manufacturer Bank Window Intercom Speaker Model NO.: E320 Condition: New Certification: CE Hardware Technology: All-in-One Call Type: Mixed Usage: Commercial Name: Bank Window Intercom System Dimension: 155*90*65 Mm Quality: 100% Same Working Current: <300mA Volume Adjustment: Yes (Can Be Adjusted Separately) with Recorder Jack: Yes Application: Bank, Hospital,Post Office, Station Tickets Working Voltage: DC16V Function: Anti-Interference and Noise-Free Install: Easy Trademark: KOQI Transport Package: Each Unit in a Standard Box Specification: CE Origin: Fujian, China Product Description China manufacturer Bank window intercom systemE320 Bank/Box Office/Window intercom KitsEasy to install, only one wire for master station ,substation connectionFunctions and Features:1)Hands free two-way talkback full automaticity, mike inside the substation2 Microcomputer controled circuit with squelch function, can thoroughly solve echo and squeal problems.3) Adopt high-powered mic,elegant appearance, voice is lifelike, clear4) Easy installation,only one wire for master station and substation connection.5) Volume of master station and substation can be adjusted separately6) With recorder jackTechnical Parameters:Working voltage: 12VWorking current:≤300mATransmit Frequency:315MHz±75kEnvironment tem.:-35~60Dimension: 155x90x65 mmPicture of bank window intercom system:If you are interested in window intercom, please feel free to contact me, i will reply you in 24 hours. Thank you.