The WIR RX18 is a under-the-chin style two-channel infrared receiver designed for use with a transmitter operating on 2.3 or 2.8 MHz or stereo. This easy-to-operate, stethoscope-style receiver is ideal for listening applications where optimal sound quality is essential. Provides a range of up to 3,063 square feet (285 square meters) in single-channel mode when used with a Williams Sound WIR TX925 or WIR TX90 infrared system. Lightweight, one-piece design is comfortable and easy-to-clean. An on/off control is built into the arms of the unit, saving on battery life

• Operates 7 hours per charge
• Closed ear design/comfortable silicone eartips
• Lightweight, one-piece design
• Use with CHG 518 drop-in charger (sold separately)
• Includes: (1) WIR RX18 receiver and (1) BAT AP11A battery

• Weight: 2.0 oz (56 g) with battery
• Material and Color: ABS plastic, Black and Grey
• Operating Range: Up to 3,063 sq ft (285 sq m) when used with the TX9 emitter or TX90 transmitter in single-channel mode; Up to 1,000 sq ft (93 sq m) when used with the TX75 in single-channel mode
• Modulation Frequency: 2.3 MHz or 2.8 MHz or stereo
• Frequency Response: 200 Hz to 8 kHz, ± 5 dB
• Signal to Noise Ratio: 60 dB at 10 m
• Controls: Volume control thumbwheel, 3-position selection switch (2.3 MHz, 2.8 MHz, stereo)
• Acoustic Output: 120 dB MAX SSPL90 with 2 cc coupler
• Compatibility: Compatible with 2.3 MHz and 2.8 MHz IR transmitters, WIR TX900 and WIR TX925 systems
• Power Switch: Built into receiver "arms"
• Ear pads: Uses EAR 240 silicon eartips
• Approvals: CE, RoHS