Video Conference | AV Accessories | WM702LL
WM702LL - UHF Wireless Lapel Microphone System (2-Channel True Diversity)
Wireless Microphone System
WM702LL
UHF true diversity wireless conference microphone system pairing a 2-channel receiver with compact lapel condenser transmitters — 200 selectable channels, AFS auto frequency scan and up to 300m visual-line working distance.
Product Description
The WM702LL is a UHF true diversity wireless 2-channel conference microphone system. The receiver uses a new anti-electromagnetic interference circuit design to eliminate interference from mobile phones and other electronics, with an HD COG display showing AF/RF signal strength, frequency, volume, channel and transmitter battery level.
The compact lapel transmitter has a high-brightness OLED display showing frequency, battery level and operating status. Its anti-howling, high-sensitivity condenser microphone core delivers high-fidelity conference sound in a hands-free form factor, with an operating range of up to 100 metres under best conditions.
AFS auto frequency scan selects the optimal clean channel automatically, while infrared SYNC one-click pairing, feedback howling suppression and true diversity 4-antenna reception keep audio stable over long distances.
Receiver rear panel
Key Features
True Diversity Reception
Four independent antennas give more stable transmission and fewer blind spots.
AFS Auto Frequency Scan
Finds clean frequency points and selects the optimal channel automatically.
Infrared SYNC Pairing
One-click automatic pairing between transmitter and receiver.
Anti-Howling Condenser Capsule
High-sensitivity condenser core for clear speech in a compact lapel transmitter.
Ultra-Compact Lapel Design
107 × 63 × 19.5mm and 0.07kg — clips discreetly to clothing for hands-free use.
Anti-Electromagnetic Interference
New anti-EMI circuit keeps audio clean in crowded RF environments.
HD COG Display & Controls
Light ring, shuttle knob and COG display show signal, frequency, volume and battery.
1U Rack-Mountable
Standard 1U metal chassis integrates into any equipment rack.
Extended Battery Life
At least 8 hours of continuous speaking and 12 hours of standby per charge.
Ideal For
Conference Rooms
Discreet lapel mics for chairman and delegate positions
Lecture Halls
Hands-free pickup for instructors moving around the room
Large Venues
Antenna distribution for full-coverage wireless audio
Auditoriums
Discreet multi-speaker audio for panels and presentations
Technical Specifications
| Receiver | |
|---|---|
| Power Supply | DC 12V, < 7.2W |
| Dimensions (L×W×H) | 483 × 175 × 45.3 mm |
| Weight | 2.75 kg |
| Carrier Frequency Band | UHF 512–562MHz (customizable) |
| Bandwidth | 50MHz |
| Audio Channels | 4CH |
| Modulation / Oscillation | FM / PLL |
| Sensitivity | S/N > 60dB @ 25KHz, 6dBv |
| Max Deviation | ±45KHz |
| S/N Ratio | > 105dB |
| T.H.D. | < 0.7% @ 1KHz |
| Frequency Response | 20Hz – 20KHz ±3dB |
| Working Distance | 300m (visual distance) |
| Audio Output | Unbalanced 6.35mm × 1, Balanced XLR × 2 |
| Antenna Interface | BNC × 4 |
| Lapel Transmitter | |
| Working Voltage | DC 3.7V – 4.5V |
| Consumption | Standby ≤ 350mW, Speaking ≤ 620mW |
| Display | OLED |
| Operating Time | 8 – 10 hours |
| Operating Temperature | -9°C – 40°C |
| Dimensions (L×W×H) | 107 × 63 × 19.5 mm |
| Weight | 0.07 kg |
| Capsule Type | Condenser |
| RF Power | 15mW |
| Harmonic Radiation | < -65dBm |
| Operation Distance | Up to 100m (best), 60m (normal) |
