Two-in-one Wireless Headset Microphone UK-Ai220T

Product Features:

1. Adopts UHF ultra-high frequency band, featuring less interference and more reliable transmission compared with traditional VHF bands. It supports two-channel signal reception with 100 selectable channels per channel and IR infrared automatic frequency matching function, suitable for various conferences and speech scenarios.

2. Independent electronic volume adjustment for each channel with 31-level volume regulation. Signals are transmitted over the UHF band with 250 KHz frequency stepping, and frequency matching is realized via infrared.

3. Equipped with a lock screen function operated through function group keys. Dedicated pilot signals and ID codes are adopted for audio and data to effectively prevent crosstalk and interference.

4. Supports one-touch frequency scanning to intelligently search for interference-free frequencies. Each channel features antenna diversity function which can automatically indicate the current antenna status for stronger anti-interference performance.

5. Transmits signals over the UHF band within the frequency range of 640-690 MHz. The LCD screen displays working channel, operating frequency point, received signal and audio signal.

6. Two rubber receiving antennas are mounted on the rear of the receiver to strengthen signal reception with an elegant appearance.

▲7. The rear panel is equipped with 2 balanced outputs, 1 mixed unbalanced output and 1 mixed balanced output, suitable for connecting various external devices.

▲8. Built-in AI voice control: supports control over power supply, lighting, LED screen power, video switching, volume and door conference status indicator light, with voice audio feedback.

▲9. Supports voice control via headworn microphones and external omnidirectional microphones, accidental wake-up prevention, and 1-channel monitoring output.

▲10. Comes with 1 power sequencer control port, 1 lighting control port, 1 conference indicator light control port, 1 LED screen control port, 2 RS-232 ports for volume control and video switching, 1 set of voice feedback monitoring and 1 line input. Example wake word: Conference Assistant. Feedback prompt: I’m listening, please speak. When instructed to increase volume, the volume rises in 1 dB steps.

▲11. Supports one-touch AI voice command to turn off all devices with an application sequence protection mechanism: the conference system is shut down first, the display screen turns off after 5 seconds, and lighting switches off after 10 seconds to avoid switch damage caused by impact current.

▲12. Built-in 3W cavity speaker, whose power on and off can be controlled by voice.

13. Supports synchronous display of frequency and channel. Both receiver and transmitter display battery status. Low battery reminder is available, and audio will be muted when power runs out to effectively eliminate noise caused by power failure during use.

14. Microphone power consumption: 80 mA, powered by two 1.5V batteries for continuous operation of more than 6 hours.

15. Operating distance: 60 meters

Receiver Specifications

Oscillation Mode: Phase-locked loop frequency synthesis

Frequency Range: UHF 640-690 MHz (UHF 624.2MHz-673.95MHz; CH1: 624.2---648.95MHz, CH2: 649.2—673.95MHz)

Frequency Stability: ±0.001%

Modulation Mode: FM

Signal-to-Noise Ratio: >105 dB

Distortion: <0.5% @1KHz

Frequency Response: 65Hz～18KHz ± 3dB

Sensitivity: 1.2 μV @S/N=5dBμV

Power Supply: DC 12V～17V

Audio Output: Independent: 0～400mV; Mixed: 0～300mV

Transmitter Specifications

Power Supply: DC 3V (two 1.5V AA batteries)

Microphone Power Consumption: 100mA

Carrier Frequency: UHF 640-690MHz

Frequency Stability: ±0.001%

Maximum Frequency Deviation: ±30KHz

Signal-to-Noise Ratio: >60dB

Adjacent Channel Rejection Ratio: >80dB

Dynamic Range: ≥100dB

Type: Condenser Microphone

Polar Pattern: Unidirectional

Frequency Response: 40Hz～20KHz

Microphone Sensitivity: -43±3dB@1KHz

Transmission Power: 8mW(LO)/13mW(HI)