Williams AV IRH-35 Handheld Infrared Microphone, Channel A or B Selectable
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Williams AV IRH-35 Handheld Infrared Microphone, Channel A or B Selectable
The Williams AV IRH-35 is a durable, student-friendly handheld infrared microphone/transmitter designed for classroom interaction. Its rugged metal housing minimizes handling noise while delivering clear, intelligible speech via a unidirectional condenser element. Featuring ten strategically placed emitting diodes, it delivers 360° IR coverage for reliable connectivity across a typical learning environment.
Channel selection via a slide switch (A or B) enables flexible pairing with the receiving system. The convenient battery-level LED—green for usable charge, red when needing recharge—and the simple on/off slider switch make it intuitive for daily classroom use. Powered by two rechargeable AA NiMH batteries, the IRH-35 delivers about 7 hours of operation per charge.
Key Features
- Microphone type: Unidirectional condenser for clear vocal reproduction.
- Channel selection: Field-selectable A or B via slide switch.
- Emitting diodes: 10 high-power IR diodes (2 top, 6 around body, 2 bottom) for 360° coverage.
- Battery level indicator: LED (green = OK, red = recharge).
- Controls: On/off slide switch.
- Power source: Two AA NiMH rechargeable batteries (~7 hours runtime).
- Housing: Metal body, sturdy for frequent student use.
Technical Specifications
- Transmission carrier: Infrared (IR), FM wide-band.
- Frequencies: 2.08 MHz & 2.54 MHz.
- Pilot tone: 32.768 kHz, with ± 25 kHz peak deviation.
- Operating range: Approx. 60 ft (line of sight), ~2,500 sq ft coverage.
- Emitting diodes: 10 total (placement ensures full-room coverage).
- Battery life: ~7 hours per charge.
- Weight: 10.3 oz (≈0.65 lb / 292 g) including batteries.
- Dimensions: 9.625 in H × 2.125 in Ø (head) × 1.4375 in Ø (body) — (24.45 cm × 5.40 cm × 3.65 cm).
What's Included
- 1x Williams AV IRH-35 Handheld Infrared Microphone (with channel A/B slide switch)
- Batteries Sold Seperately
