一区二区三区欧美国产,亚洲AV网站在线,99这里只有免费费精品,免费中文字幕午夜福利片

  1. The pushbuttons, control knobs, and case are easily soiled by long-term use of the intercom. Remove the control knobs from the intercom and clean the case with a neutral detergent (do not use strong corrosive chemicals) and a damp cloth. The use of chemicals such as stain removers, alcohol, sprays, or petroleum agents may cause damage to the surface and housing of the intercom.
  2. Handle the walkie-talkie gently and do not move the walkie-talkie with the antenna in hand.
  3. Close the dust cover (if equipped) when accessories are not in use.