1.2400MHz-2483MHz is an ISM frequency band which is legal and free all over the world. 120 selectable frequencies can support more than 100 rooms using at the same time without crosstalk. 

2. Humanized Multi-room simultaneous using solution: 1-3 meters paring distance, more than 10 meters using distance. Each microphone can use in any room installed with TP-WIRELESS speaker without crosstalk. Every teacher can have their personel microphone and use it in any classroom. 

3. The transmit frequency is automatically and synchronously set by the receiver (main speaker). 

4. Choices of installation: mounting with tripod, hanging on wall, or putting on the table directly. We provide the mounted plates as the installation accessories, you can also complete the installation work according to the instructions. 

Features of the speaker: 
1. High quality wooden speaker housing and advanced audio circuitry design features natural and distortion-free sound. 
2. Stereo left and right speakers, maximum output power is up to 60W. 
3. Broadcasting Audio Input socket for convenient connection with signal from campus broadcasting or DVD, etc. 
4. RCA audio Input function meets the demands of multimedia teaching. 
5. Fuse Socket makes the equipment is safe enough for any application. 

Features of the wireless microphone: 

1. Using zinc alloy body and heat treatment Mic House, make the microphone very firm structure and reliable. 
2. Using Back electret condenser cartridge, with a smooth frequency response line. 2*AA battery Power Supply. 
3. The Mic House central Adopt polygons design, with beautiful appearance, and Can prevent falls perfectly. 
4. Auto mute when signal is weak or no signal. 
5. Grace and elegant appearance.

Technical Parameters: 
Frequency Range: 2400MHz-2483MHz 
Frequency Response: 20Hz-20KHz 
Playtime of Transmitter): >8hrs 
Guatantee Operating Range: 15meters 
Power Supply: AC100V-AC240V 
Output Impedance: 4Ω 
Latency Time: 1.1-2ms 
SNR: 89dB 
Distortion: 1.5%@1KHz 
Output Power: 60W(2*30W) 
Dimensions: 495mm*345mm*275mm 
Weight: 9.68Kg

Packing list for one set: 
1*Main speaker 
1*Deputy speaker 
2*Mounted plates 
1*Wireless handhold microphone 
1*3.5mm stereo to RCA stereo cable 
1*3 meters speaker cable (This cable is used to connected main speaker and deputy speaker, if you need a longer speaker, please leave us a message) 
1*Power line for speaker 
(US/EU/UK standard depends on your shipping address, if you have a special demand, please leave us a message)