Audio Video Switcher

The Milestone ML 401AV is a professional 4-input, single-output composite audio video switcher that lets multiple AV sources share one projector or display without any manual cable changes. Designed and manufactured in India by Milestone Electronics, it routes a selected composite video and stereo audio source to a single display and audio system with clean, reliable signal handling. It suits boardrooms, classrooms, retail screens and security monitoring setups that need dependable source switching.

Key Features
• 4 composite video inputs with stereo audio (2 RCA per source) and 1 composite video plus 1 stereo audio output
• Multiple independent control methods: front panel keypad, remote keypad or contact closure up to 50 metres, RS232C serial and built-in IR remote
• Automatic scan mode cycles all four inputs at 20-second intervals for unattended content rotation
• LED indicators on the front panel confirm the active channel, scan status and power state
• Supports up to 1080p Full HD signals over standard RCA audio video cabling
• Runs on 230 V AC mains with a rugged metal enclosure for fixed table-top installation

Applications
• Corporate boardrooms and meeting rooms sharing laptops, players and document cameras with a single projector
• Classrooms and training rooms switching between teaching sources on one display
• Security and surveillance monitoring to view up to four camera feeds on a single monitor
• Retail and digital signage with automatic scan mode for unattended content rotation
• Live events and conference setups with remote switching from up to 50 metres away

Summary
In summary, the Milestone ML 401AV is a dependable, easy-to-install AV switching solution for any facility that runs multiple composite sources on shared display systems. With flexible manual, serial and IR control, it is a practical choice for integrators and procurement teams across India.