Two-in-one Wireless Conference Microphone (Long Pole) UK-Ai220HC

# 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. Each channel is equipped with independent electronic volume adjustment with 31 volume levels. Signals are transmitted over the UHF band with a 250KHz frequency step, and frequency matching is realized via infrared.

3. Supports screen lock function operated through function keys. Audio and data adopt dedicated pilot signals and ID codes to effectively prevent crosstalk and interference.

4. Comes with one-touch frequency scanning function for intelligent searching of interference-free frequencies. Each channel features antenna diversity, which can automatically indicate the current antenna status for stronger anti-interference performance.

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

6. Two rubber receiving antennas are installed on the rear panel of the receiver to enhance 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, compatible with various external devices.

▲8. Built-in AI voice control: supports control of power supply, lighting, LED screen power, video switching, volume and conference status indicator lights at doorways, with voice feedback.

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

▲10. Equipped 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 and video switching control, 1 set of voice feedback monitoring and 1 line input. Wake word example: Conference Assistant. Feedback announcement: I'm listening, please speak. When turning up the volume, the volume increases in 1dB steps.

▲11. Supports one-touch AI voice control to turn off all devices with sequential protection mechanism: shut down conference equipment first, turn off the display after 5 seconds, and turn off lighting after 10 seconds to avoid switch damage caused by impact current.

▲12. Built-in 3W cavity speaker, supporting voice-controlled power on and off.

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: 80mA, powered by two 1.5V batteries, supporting continuous operation for more than 6 hours.

15. Operating distance: 60 meters

## Receiver Specifications

Oscillation Mode: Phase-Locked Loop Frequency Synthesis

Frequency Range: UHF 640-690MHz (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: >105dB

Distortion: <0.5% @1KHz

Frequency Response: 65Hz～18KHz ± 3dB

Sensitivity: 1.2μV @S/N=5dBμV

Power Supply: DC 12V～17V

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

## Gooseneck Desktop Microphone Specifications

1. Microphone power consumption: 190mA, built-in lithium battery for continuous operation over 16 hours, supporting external USB Type-C charging.

▲2. Charging voltage display available during charging; reminder function triggers when charger voltage is too high or too low; battery level displayed in percentage.

3. A 30-second countdown reminder will pop up before shutdown when battery level is low; different indicator colors are activated when battery level drops below 10%, 20% and other thresholds.

4. Built-in analog clock dial and perpetual calendar function.

5. Supports timed shutdown, automatic shutdown and voice activation with adjustable voice activation sensitivity.

6. Built-in USB flash drive function preloaded with control software for convenient storage.

▲7. Transmit power adjustable in 5 levels with numeric and graphical indicators on the display, facilitating stacking installation and EMC control.

8. Three built-in skins and clock faces available for free switching.

▲9. Supports Simplified Chinese, English and Traditional Chinese; additional languages can be expanded.

10. 999-second countdown speaking function; reminder can be triggered when the countdown is about to end (time configurable).

▲11. Supports standby logo display; standby duration and logo are customizable.

12. Adjustable backlight brightness and backlight duration; screen-off brightness configurable for better energy efficiency.

13. High-quality ABS base housing and metal panel, manufactured with high-end craftsmanship and featuring innovative appearance design.

14. Equipped with unidirectional high-fidelity capacitive pickup capsule, offering wide frequency response and long pickup distance.

15. Bright blue light ring on microphone tube for clear working status indication.

16. Built-in circuit to resist interference from mobile phones and walkie-talkies for more stable conference speech.

17. 2.8-inch IPS color screen displays operating frequency, speaking status, battery level, clock and other information.

▲18. Supports image update via USB port emulating a USB flash drive.

19. Multiple built-in EQ presets to adapt to different speakers and venues.

▲20. System parameters such as EQ and transmit power can be configured, and firmware can be upgraded via USB port using dedicated software.