Classroom Soundfield & Infrared Microphone Systems

An infrared classroom audio system carries the teacher’s voice on modulated infrared light at 850 nm. Because light does not pass through walls, each classroom stays acoustically separate from the room next door: there is no frequency coordination between classes, no interference from Wi-Fi or mobile networks, and no licence to renew. The trade-off is line of sight — sensors must see the microphone, so room layout and sensor placement matter more than they do with radio systems.

A complete system usually combines a microphone (handheld, pendant or presenter), a receiver or amplifier with an infrared front end, one or more sensors for larger rooms, charging hardware and loudspeakers. This section groups those parts so you can start from a pre-matched kit, replace a single component, or specify a system for a new building. If you are unsure which route fits your project, send the room dimensions and ceiling type with your enquiry.

For export projects, confirm the destination country’s mains voltage and plug type, and whether the receiver must feed a 100 V line. English datasheets and wiring diagrams can be requested with a tender enquiry.