Comelit 4681 Colour Audio-Video Unit for 2-Wire Systems

Deliver a professional, reliable entry experience with the Comelit 4681 Colour Audio-Video Unit — a purpose-built intercom and entry accessory for commercial and residential installations. Designed for 2-wire systems, this Comelit Simplebus2 audio/video module reduces wiring complexity while providing surveillance-grade daytime colour imaging and LED camera lighting for low-light conditions. Users benefit from echo-cancelling audio, a sealed loudspeaker and front volume control that ensure clear, natural conversation at every door. Built-in access control features include an electronic lock-release (3A) and C/NC/NO 10A relay contacts for easy integration with electric strikes, magnetic locks or building management systems. Installers will appreciate the programmable microprocessor and 8-position dip switch for customizing call routing and accessibility options without extra hardware. At a compact 102x55x38 mm, the 4681 blends into tight spaces while delivering robust security, monitoring and access control capabilities. Ideal for apartment blocks, offices and gated entries — specify the Comelit 4681 to upgrade entry surveillance and visitor management. Contact your supplier to order or confirm compatibility with your system.

• Fast, low-cost installation on existing 2-wire systems to reduce labor and upgrade disruption
• Crisp surveillance video with a directable colour camera and LED illumination for reliable low-light monitoring
• Clear, natural speech aided by echo-cancelling audio, sealed loudspeaker and front-mounted volume control for better visitor interaction
• Integrated lock-release (3A) and auxiliary C/NC/NO 10A relay contacts to simplify access control and third-party integration
• Programmable microprocessor with 8-position dip switch for tailored call routing and accessibility settings
• Compact Simplebus2 design (102x55x38 mm) that fits neat into modern entry systems and saves wall space