Product Features

1. Adopts UHF ultra-high frequency band, which has less interference and more reliable transmission than 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. Independent electronic volume control for each channel, with 31-level electronic volume adjustment. UHF band signal transmission with 250KHz frequency step, and infrared frequency matching.
3. Equipped with screen lock function operated via function combination keys. Audio and data adopt dedicated pilot signal and ID code mode, effectively preventing crosstalk and interference.
4. One-click frequency search function to intelligently find interference-free frequencies. Each channel features antenna diversity, automatically indicating current antenna status for stronger anti-interference performance.
5. UHF band signal transmission with frequency range 640-690MHz. LCD screen displays working channel, working frequency, received signal and audio signal.
6. Two rubber receiving antennas on the back of the receiver enhance signal reception with an elegant appearance.
7. Equipped with 2 balanced outputs, 1 mixed unbalanced output and 1 mixed balanced output on the back, 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 panel at the entrance, with voice feedback.
9. Supports voice control for gooseneck desktop microphones and external omnidirectional microphones, anti-mis-touch wake-up, and 1-channel monitor output.
10. Built-in control ports: 1 power sequencer port, 1 lighting control port, 1 conference light panel control port, 1 LED screen control port, 2 RS-232 ports for volume and video switching, 1 group voice feedback monitor, 1 line input.
    Wake word: Conference Secretary.
    Feedback response: Yes, please speak.
    Volume increases by +1dB per step when commanded to turn up.
11. Supports AI voice one-click shutdown of all devices with sequential protection mechanism: conference system first, display after 5 seconds, lighting after 10 seconds, preventing switch damage from impulse current.
12. Built-in 3W cavity speaker, support voice control for on/off.
13. Simultaneous display of frequency and channel. Both receiver and transmitter show battery status, with low battery reminder and mute when power off, effectively avoiding noise from power depletion during use.
14. Microphone power consumption: 80mA, powered by 2 pieces of 1.5V batteries, working continuously for more than 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 Power Consumption: 100mA
• Carrier Frequency: UHF 640-690MHz
• Frequency Stability: ±0.001%
• Maximum Frequency Deviation: ±30KHz
• Signal-to-Noise Ratio: >60dB
• Adjacent Channel Rejection: >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)