Wireless microphones include portable models for singing with non-automatic channel selection receivers and professional, high-end stage models with automatic channel selection receivers. Popular models use quartz-locked fixed-frequency reception to eliminate "dead zones" in radio waves and overcome the shortcomings of intermittent or unstable audio output from the receiver. They all use a "noise lock" mute function to prevent interference from noise during standby and the generation of large pulse noise when turning the unit on and off. The audio output has balanced and mixed types, which can match the input characteristics of various amplifiers. 
 
Product Features 
Uses UHF wireless microphone dedicated frequency band design, not affected by other industrial frequencies 
Long operating distance, up to 80 meters or more 
Uses superior audio compression and amplification integrated circuits and high-quality microphone elements, resulting in superior sound quality and reduced howling 
The transmitter is powered by a 9V battery, offering long battery life and convenient maintenance and replacement 
Features balanced and unbalanced audio output, facilitating connection with various audio equipment 
The receiver's front panel features RF indication and audio level dynamic indication, allowing for real-time monitoring of the operating status 
Both the microphone transmitter and receiver are made of high-strength alloy materials for durability 
Suitable for karaoke singing, home entertainment, and outdoor activities 
 
 
System Parameters: 
Audio Frequency Response: 80-120KHz 
Dynamic Range: ≥60dB 
System Distortion: ≤1% 
Signal-to-Noise Ratio: ≥60dB 
Ideal Operating Distance: 80m 
Operating Temperature Range: 5℃-4.5℃ 
Carrier Frequency Range: 580-830 MHz 
Receiver: Receiving Sensitivity: <2μV 
Image Rejection: >40dB 
De-emphasis: 50μS 
Audio Output Impedance: 600Ω 
Audio Output Level: 0-0.5V 
Power Supply: AC220-240V 50/60Hz 
Power Consumption: 3W 
Dimensions: 548X300X565mm

Transmitter: 
Frequency Stability: ±0.005% 
Carrier Output Power: ≤30Mw 
Spurious Radiation Suppression: >40dB Modulation Method: FM

Maximum Modulation: ±75KHz 
Pickup Method: Dynamic 
Power Supply: 1.5V 
Battery Power Consumption: <30mA 
Dimensions: Ф37X 250mm (Handheld Microphone)