Product Features

1. Adopts UHF ultra-high frequency band, which has less interference and more reliable transmission than the traditional VHF band. Dual-channel signal reception, with 100 channels available for each channel. IR infrared automatic frequency matching function; suitable for various conferences and speeches.
2. Each channel is equipped with independent electronic volume control, with 31 levels of electronic volume adjustment. UHF band signal transmission with 250KHz frequency stepping; infrared frequency matching is adopted.
3. Equipped with a lock function operated via function combination keys. Audio and data use dedicated pilot signals and ID codes to effectively prevent crosstalk and interference.
4. Features one-key frequency search, which can intelligently find interference-free frequencies. Each channel supports antenna diversity, automatically indicating the current antenna status for stronger anti-interference performance.
5. UHF band signal transmission with a frequency range of 640–690MHz. LCD screen displays working channel, working frequency, received signal and audio signal.
6. Two rubber receiving antennas are installed on the back of the receiver to enhance signal reception, with an elegant and decent appearance.
7. The back 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 of power, lighting, LED screen power, video switching, volume, and conference status light signs at the entrance, with voice feedback.
9. Supports voice control via two handheld microphones and an external omnidirectional microphone, supports anti-mis-touch wake-up, and provides 1 channel of monitor output.
10. Built-in control ports: 1 power sequencer control port, 1 lighting control port, 1 conference light sign control port, 1 LED screen control port, 2 RS-232 ports for volume and video switching control, 1 group of voice feedback monitoring, 1 line input.
    • Wake word: Conference Secretary
    • Feedback response: Yes, please speak.
    • Volume increases step by 1dB when instructed to “turn up the volume”.
11. Supports AI voice one-key shutdown of all devices with sequential protection mechanism: conference system first, display after 5 seconds, lighting after 10 seconds, to prevent switch damage from impulse current.
12. Built-in 3W cavity speaker, supports voice control for turning on/off.
13. Simultaneous display of frequency and channel. Both receiver and transmitter show battery status, with low battery reminder and mute when power is exhausted, effectively preventing noise from power failure during use.
14. Microphone power consumption: 80mA, powered by 2 pieces of 1.5V batteries, continuous working time over 6 hours.
15. Operating distance: 60 meters

Receiver Parameters

• Oscillation Mode: Phase-Locked Loop (PLL) 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

Transmitter Parameters

• Power Supply: DC 3V (2 × 1.5V AA batteries)
• Microphone Current Consumption: 100mA
• Carrier Frequency: UHF 640–690MHz
• Frequency Stability: ±0.001%
• Maximum Frequency Deviation: ±30KHz
• Signal-to-Noise Ratio: >60dB
• Adjacent Channel Interference Ratio: >80dB
• Dynamic Range: ≥100dB
• Type: Condenser
• Polar Pattern: Uni-directional
• Frequency Response: 40Hz～20KHz
• Microphone Sensitivity: -43±3dB @1KHz
• Transmit Power: 8mW (LO) / 13mW (HI)