Product Name: SIP Network Touch Screen Desktop Gooseneck Microphone for Network based IP PA System Model NO.: SIPM-30 Color: Black Wire or Not: Wire Number of Channels: 1 Support: LAN Protocol: SIP Type: Call Station Interface: 7 Inch Touch Screen Power Supply: 12V DC Trademark: LUCKY TONE Transport Package: Carton Specification: 250*145*55mm Origin: China HS Code: 85181000 Product Description Product Features:1. Professional SIP Call Station to control and make announcement to all devices in the system.2. Adopt high-speed industrial grade chip, startup in less than 1s3. Support zone paging, and the red indicator will light up when talking4. Built-in speaker for monitoring and intercom5. With audio output for external active speaker6. With audio input for external audio source to target terminals7. Support offline talkback (without server)