Harmonai MR40 UHF Quad-Lavalier Wireless Microphone System image 1

Harmonai MR40 UHF Quad-Lavalier Wireless Microphone System | Professional 4-Channel Wireless Conference System

A professional UHF 640–690 MHz wireless conference system with four independent lavalier microphones for simultaneous multi-speaker use in meetings, training, and lectures.

$142.90

Model: MR40
Category: Microphones
Images: 4 images
Status: ready

Product Brief

Harmonai MR40 UHF Quad-Lavalier Wireless Microphone System | Professional 4-Channel Wireless Conference System

Overview

A professional UHF 640–690 MHz wireless conference system with four independent lavalier microphones for simultaneous multi-speaker use in meetings, training, and lectures.

Price: $142.90
Model: MR40
Category: Microphones

Specifications

Parameter	Value
Receiver Frequency Range	640–690 MHz
Receiver Sensitivity	−94 dBm (for 30 dB)
Image Rejection	>60 dB
Frequency Stability	±0.005%
Modulation Method	FM
Maximum Frequency Deviation	±45 kHz
Audio Response	50 Hz–18 kHz (+3 dB)
Signal-to-Noise Ratio	>105 dB
Dynamic Range	>100 dB
Total System Distortion	<0.5%
Operating Temperature	−10°C to 55°C
Receiver Power Supply	DC 12 V / 1 A
Transmitter Frequency Range	640–690 MHz
Harmonic Radiation	<−63 dBm
Bandwidth	80 MHz
Maximum Input SPL	130 dB SPL
Current Consumption	<110 mA
Transmit Power	30 mW
Transmitter Frequency Response	50 Hz–18 kHz
Transmitter Power Supply	2 × 1.5 V AA batteries

Service Support

We support project consultation, model recommendation, bulk purchasing and catalog delivery for retail, multipurpose halls, conference rooms and live events.

Business hours: Monday to Friday 09:00 - 18:30
Inquiry channels: phone / email / website form
Tip: share budget, quantity and use scenario in advance

Harmonai MR40 UHF quad-lavalier wireless microphone system product image

Product Overview

The Harmonai MR40 UHF quad-lavalier wireless microphone system is a professional-grade wireless conference solution designed specifically for meeting environments. Operating in the UHF 640–690 MHz band, it supports four independent channels—enabling up to four speakers to transmit simultaneously. Its compact, clip-on design is portable and comfortable to wear, making it ideal for conferences, training sessions, and classroom instruction. With a signal-to-noise ratio exceeding 105 dB and a dynamic range over 100 dB, the system delivers clear, natural, and highly accurate audio reproduction.

Technical Specifications

Receiver Frequency Range

640–690 MHz

Receiver Sensitivity

−94 dBm (for 30 dB)

Image Rejection

>60 dB

Frequency Stability

±0.005%

Modulation Method

Maximum Frequency Deviation

±45 kHz

Audio Response

50 Hz–18 kHz (+3 dB)

Signal-to-Noise Ratio

>105 dB

Dynamic Range

>100 dB

Total System Distortion

<0.5%

Operating Temperature

−10°C to 55°C

Receiver Power Supply

DC 12 V / 1 A

Transmitter Frequency Range

640–690 MHz

Harmonic Radiation

<−63 dBm

Bandwidth

80 MHz

Maximum Input SPL

130 dB SPL

Current Consumption

<110 mA

Transmit Power

30 mW

Transmitter Frequency Response

50 Hz–18 kHz

Transmitter Power Supply

2 × 1.5 V AA batteries

Recommended Applications

Ideal for multi-speaker scenarios including conference room discussions, corporate training, academic seminars, business negotiations, and interview recording. The lavalier design leaves hands free and ensures natural, comfortable, long-wearing performance—making it a top choice for modern meetings and professional events.

For more details or a personalized quote, contact us today—Harmonai’s professional support team is ready to assist you with comprehensive service.