Boya BY-WM8 PRO-K2 UHF Dual Channel Wireless Lapel Lavalier Microphone

• Includes Two Transmitters & One Receiver
• Dual-Channel Wireless Receiver suits Cameras, Camcorders
• Capture interviews, film dialog, field recording, broadcast TV, news gathering
• 48 Selectable UHF Channels
• Broadcast-Quality Sound
• Selectable Stereo and Mono Mode
• Mute function
• LCDs with Automatic LCD-lock Function
• Monitoring sound by headphone output (Receiver)
• Operation range up to 100m (300')
• Powered by two AA batteries (Transmitter & Receiver)
• 2 AA batteries for both transmitter & receiver

Specifications: 

• System
• Oscillator type - PLL Synthesized Control Oscillator
• Carrier Frequency Range - 576.4 MHz-599.9 MHz (Transmitter A), 568.6 MHz-592.1 MHz (Transmitter B)
• Channels - 48
• Frequency response - 40 Hz to 18 kHz (+/-3dB)
• Operation range - 100m (300') (without obstacle)
• Operating temperature - 14° F to 122° F (-10°C to +50°C)
• Storage temperature - 14° F to 131° F (-10°C to +55°C)

• Transmitter
• RF output power - ≤10 mW
• Antenna - 1/4" wire antenna
• Spurious emission - 250 nW or less
• Audio input connector - 3.5mm mini jack
• Reference audio input level - –60 dBV (MIC input, 0 dB attenuation)
• Reference deviation - ±5 kHz (–60 dBV, 1 kHz input)
• Input frequency range - 20 Hz-20 KHz
• Distortion - 0.5% or less
• Power supply - Two AA size batteries
• Operation time - About 6 hours
• Dimensions - 208(H) × 67(W) × 29(L)mm
• Weight - 80g without batteries

• Receiver
• Antenna - 1/4" wire antenna
• Audio input connector - 3.5mm mini jack
• Signal-to-noise ratio - 70 dB or more
• Distortion - 0.5% or less
• Headphone output level - 30mW (16Ω)
• Audio output level - –60 dBV
• Power supply - Two AA size batteries
• Operation time - About 4 hours
• Dimensions - 208(H) × 67(W) × 29(L)mm
• Weight - 90g without batteries

• Lavalier Microphone
• Transducer - Back electret Condenser
• Polar pattern - Omni-directional
• Frequency Range - 35Hz ~ 18 KHz
• Signal / Noise - 74dB SPL
• Sensitivity - -30dB +/-3dB / 0dB=1V/Pa, 1 kHz
• Connector - 3.5mm locking mini plug
• Length - 1.2m (4')