Functional Characteristics:

Transmitter:

1.2.4G ISM band using two-way digital shortwave frequency hopping modulation techniques;

2.Wireless Transmit Power: ≤16dBm;

3.Audio signal: digital sampling, 16Bit, 44.1kHz;

4.Pairing: close radio address on the code matches the scan;

5.Polymer lithium battery-powered transmitter to be whole and integrated package, not removable, with protection circuit, a charge can be used continuously for eight hours;

6.With 20 sensitivity adjustment buttons;

7.With built-in electret microphone, the housing has to be designed pickups cavity, the cavity can be cast outstanding acoustics sponge can be replaced in order to improve and to remove plosive Spit, reduce the possibility of cross-infection can be supplied at least three replace the sponge.

 

PA-one Receiver:

Configuration:

One pair of speakers, embedded audio pre and power amplifier module, a riot-type tubular external digital frequency hopping wireless microphone receiver module.

In order to avoid mutual interference 2.4G band products, digital frequency hopping wireless microphone receiver module requires the use of a higher compatibility 2.4G ISM band digital modulation bi shortwave frequency hopping technology. The power spectral density, EIRP, power, frequency band, radio work and other important radio band emission parameters subject to Chinese radio regulatory requirements. Products used by wireless microphone receiver module must meet the above technical parameters and provide inspection reports or above the national provincial quality inspection departments.

 

Pairing: Close the radio scan the code matches the address, in order to avoid the adjacent upper and lower floors of classrooms cross matching transmitter and receiver, wireless microphone receiver module requires the use of diffusion flame retardant PC casing (can effectively waterproof, fire retardant to prevent the knife engraved, weight and other external damage function) and is equipped with three meters above the extension cable to be installed next to the blackboard, 1.5-1.8 meters off the ground, easy to use;

The same school (different classrooms) using the number of devices: ≥1000 no crosstalk;

 

Specifications:

Wireless Transmit Power: less than 20dBm;

Audio Output Power: 2 × 80W;  Impedance: 8 ohms;

Audio Frequency Response: 20Hz-20KHz,  Microphone 60Hz-18KHz;

 Microphone Nonlinear Distortion: ≤0.2%;

Audio Amplifier Noise Voltage: ≤10mV;

Tone Control: Treble: 10KHz ± 12dB, Bass: 100Hz ± 12dB;

SNR: ≥80dB;

All the way to the microphone input, one audio (Line In) input, with environmental microphone jack;

Size: 240×220×360(unit: mm)