Harmonai ACT-820 Dual-Channel True Diversity Wireless Microphone image 1

Harmonai ACT-820 Dual-Channel True Diversity Wireless Mic — 500m Ultra-Long Range

Professional dual-channel true diversity wireless microphone system with PLL frequency synthesis, 500m open-space range, ±0.002% frequency stability, LCD display, infrared sync, du...

$12.09

Model: ACT-820
Category: Microphones
Images: 4 images
Status: ready

Product Brief

Harmonai ACT-820 Dual-Channel True Diversity Wireless Mic — 500m Ultra-Long Range

Overview

Professional dual-channel true diversity wireless microphone system with PLL frequency synthesis, 500m open-space range, ±0.002% frequency stability, LCD display, infrared sync, du...

Price: $12.09
Model: ACT-820
Category: Microphones

Specifications

Parameter	Value
Product Type	Dual-channel true diversity wireless microphone
Model	ACT-820
Operating Distance	Over 200 meters (up to over 500 meters in open space)
Transmitter Operating Frequency	600–700 MHz
Receiver Operating Frequency	600–690 MHz
Frequency Synthesis Technology	PLL phase-locked loop frequency synthesis
Control Method	Microcomputer CPU control
Sync Method	Infrared synchronization
Transmitter Channels	Freely selectable among 32 / 64 / 99 channels
Receiver Channels	Freely selectable among 32 / 64 channels
Display Type	LCD digital display
Frequency Stability	±0.002%
Max FM Deviation	±45 kHz
Noise Squelch Control	Noise-lock squelch + tone-code navigation squelch
Audio Processing	Dynamic audio compression and automatic level control circuit
Low-Battery Warning	Intelligent low-battery warning display
Transmitter Power Supply	2 x AA batteries
Battery Life	Approximately 8 hours
Reception Method	True diversity reception

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

ACT-820 Dual-Channel True Diversity 500m Wireless Microphone product image

Product Overview

Harmonai ACT-820 is a professional dual-channel true diversity wireless microphone system designed for KTV venues, live stage performances, conference presentations, and educational training. It employs PLL phase-locked loop frequency synthesis technology, combined with microcomputer CPU control, achieving exceptional frequency stability of ±0.002% to ensure reliable, interference-resistant signal transmission. In open space, transmission distance reaches over 500 meters, meeting demanding long-range audio capture requirements for large venues. Both transmitters and the receiver feature LCD digital displays for intuitive, user-friendly operation.

Product Type

Dual-channel true diversity wireless microphone

Model

ACT-820

Operating Distance

Over 200 meters (up to over 500 meters in open space)

Transmitter Operating Frequency

600–700 MHz

Receiver Operating Frequency

600–690 MHz

Frequency Synthesis Technology

PLL phase-locked loop frequency synthesis

Control Method

Microcomputer CPU control

Sync Method

Infrared synchronization

Transmitter Channels

Freely selectable among 32 / 64 / 99 channels

Receiver Channels

Freely selectable among 32 / 64 channels

Display Type

LCD digital display

Frequency Stability

±0.002%

Max FM Deviation

±45 kHz

Noise Squelch Control

Noise-lock squelch + tone-code navigation squelch

Audio Processing

Dynamic audio compression and automatic level control circuit

Low-Battery Warning

Intelligent low-battery warning display

Transmitter Power Supply

2 x AA batteries

Battery Life

Approximately 8 hours

Reception Method

True diversity reception

Recommended Applications

Ideal for KTV venues, live stage performances, conference presentations, educational training, wedding ceremonies, and outdoor events. Its 500-meter ultra-long transmission range makes it suitable for professional audio capture in large auditoriums and outdoor venues, while true diversity reception ensures stable, drop-free signal performance even in complex RF environments.

For detailed product information or bulk procurement solutions, contact the Harmonai professional team for technical support and customized services.