Functional Features:
ㆍUHF ultra-high frequency band, less interference than the traditional
VHF band, more reliable transmission;
ㆍPLL digital PLL multi-channel frequency synthesis technology, in the
frequency range of 60MHZ,With 300KHZ channel interval, it provides up
to 200 channel choices, convenient for multiple sets of machines At the
same time, easily avoid all kinds of interference;
ㆍAdvanced automatic frequency control technology, even if the trans-
mitter and receiver frequency is out of order,Just a light press, the
transmitter will automatically track the lock frequency and adjust con-
sistent, easy to use;
ㆍHigh grade LCD screen, so that the receiver and transmitter working
state at a glance;
ㆍWireless transmission system, the conference seat is powered by 3 AA
batteries, the use of high alkaline batteries can make Use for a long time
(8 hours for high power, 12 hours for low power), With rechargeable
batteries, The usage time will decrease.
ㆍThe maximum use range of space is more than 100 meters, the ideal
use range of space is 50 meters.
ㆍTransmitter with mute function
ㆍDigital ID identification technology, to ensure mutual interference in
communication
ㆍUnique digital encryption technology, no longer have off-site moni-
toring or eavesdropping trouble

Receiver parameters:
Mode of oscillation: PLL frequency synthesis
Frequency range: UHF499MHz-900MHz
Frequency stability: Plus or minus 0.001%
Modulation mode: FM
Signal to noise ratio: >60dB
Distortion: < 0.5% @ 1KHZ
Receiving sensitivity: 1.2/ UV @ S/N = 12 db
Power supply: DC 12V-17V
Audio output: Independent 0-2V2 mixed 0-2V

Transmitter parameters: 
Power supply: 4.5 V DC (1.5 V AA (3)

Microphone power consumption: 100mA
Carrier frequency: UHF 520MHz-950MHz
Frequency stability: Plus or minus 0.001%
Maximum frequency offset: Plus or minus 30 KHZ
Signal to noise ratio: >60dB
Adjacent frequency interference ratio: >80dB
Dynamic range: 100 db or higher
Type: Moving coil
Polarity mode: Heart to
Frequency response: 60Hz-17KHz
Microphone sensitivity: - 43 + 3 db @1 KHZ

สั่งซื้อผ่าน LAZADA : https://www.lazada.co.th/products/i4467345722.html?spm=a1zawg.24863640.table_all.1.2a594edf3jV6mc

สั่งซื้อผ่าน SHOPEE : https://shopee.co.th/product/124207834/23129776019/