Máy trợ giảng trường học không dây Yuepu RU-300KUB (3 Micro)

Stability: 0.005%, with a temperature compensated quartz crystal locked.
Signal to noise ratio: greater than or equal to 80 dB
Vice-harmonic ratio: more than 40 dB below the carrier reference
Transmit Power: 10dBm
Voltage: DC9V
Power consumption: about 30mA "
Output Power: 43W
Receiving Mode: Dual Band VHF
Frequency response: 50Hz-20KHz
Input Signal: Wired MIC × 2 wireless MIC × 2 USB × 1 SD × 1 AUX × 1 deck × 1 "
Features: Reverb, the total volume control, microphone, volume, play pause button, down song key, outside DC"
Speaker: tritone 4 Europe 6.5 inch × 1"
belt speed: 4.76cm / s ""
Power: AC115V/230V (optional), use DC12V, 2.2Ah 4AH lead-acid batteries or lithium batteries.
Effective distance: half by more than 50 meters, no shielding at up to 100 meters. "
Size:" "23.5 × 116.0 × 33.5cm"
Package weight: 4.5KG ""
Package: 1X4 Taiwan 20.0KG ""