សៀវភៅណែនាំអ្នកប្រើប្រាស់ adastra LR1 Induction Loop Receiver
adastra LR1 Induction Loop Receiver Controls Output level control Power LED LO CUT switch 3.5mm headphones jack output Operation Slide front panel upwards to install 9V battery, then close the cover. With the LEVEL control down, connect headphones to the…