
Adopt 2U standard chassis. System menu color large screen display, true diversity receiver. 
Adopting diversity receiving technology, the signal is more stable, the receiving distance is farther, and the application is wider. 
Four-channel independent frequency selection system, can be greater to reduce the occurrence of broken frequency. 
Independent LED lights show the working status of each channel RF and audio, more intuitive. 
Four-channel volume independently adjustable, SQ independently adjustable. 
IR infrared frequency matching independentcontrol.
Provide 4+2 audio outputmode, greatly facilitate the user's daily use. 
RF transmission frequency range: 640-690MHz. 
Working range: 50 meters under typical conditions and 200 meters atoutdoor straight-line distance (the actual working range depends on the absorption, reflection and interference of RF signal).
The working frequency of the system is set to 4x100 frequency points, and each channel is equipped with 100 frequency points adjustable. 
Noise lock squelch control + tone code navigation lock squelch control.
Audio dynamic expansion and automatic level control circuit.
Receiver (UR-400)
Adopt microcomputer CPU control 
PLL phase locked loop frequency synthesis technique 
Working frequency:640-690MHz 
Channel:200CH (in steps of 250KHz)
S/N signal-to-noise ratio:>102dB 
T.H. Ddistortion:<0.5%@1KHz 
Frequency response:60Hz-15KHz 
Power supply:DC12~15V/1000mA 
Transmitter (handheld microphone:H-400; beltpack transmitter: BT-400; base transmitter:T-400)
PLL phase-locked loop frequency synthesis technology, 4*100 channels freely selectable, multi-function LCD 
Working frequency:640-690MHz controlled by microcomputer CPU 
Frequency stability:0.005% (-10~50℃) 
Operation display:LCD simultaneously displays battery capacity 
FM max modulation frequency offset:+48KHzRF 
RF output power:15mW
Battery:2AA batteries -about 8hours of continuous use