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The enterprise that all executives and employees work enthusiastically
System for transmitting/receiving multi voices using ISM band frequency and method therefore
Wireless transmission and reception device using RF dual band
3-way call method using time division communication in wireless local area network
ISM frequency for multiple data transmission and reception
Proximity sensor having multiple electrode
Obstacle avoidance system using proximity sensor of multiple electrode
Multilateral call system using dual band RF
Multilingual interpretation and education system using dual band wireless transmission and reception device
LED smart streetlight furnished antenna for wireless communication
Simultaneous interpretation system using bidirectional audio data communication based on binary code division multiple access
Block type LED module
Wireless terminal using time division type
Bidirectional wireless communication module
LED control device using constant voltage, constant current and PWM
Wireless control of intelligent multipurpose display
TDMA control method
Tree RF band multilateral communication system and master/slave role decision method
Distress signal and life accident preventive multilateral wireless portable terminal
Object detection system using proximity sensor
Object detection device using proximity sensor
Division and combination method of short-range wireless communication terminal, short-range wireless communication system and short-range wireless group using two transmission and reception device
Ship distress safety system using wireless transmission and reception device and gateway