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CLEANING & REPLACING BATTERY
1. Sensing side shall maintain clean. The case
may be cleaned with soft fabric and mild
detergent. No solvent or corrosive agent may
be used.
2. Replacing battery
(1) When the sound become weak, the
battery shall be replaced.
(2) Use coin to open battery cover and
remove used battery. Place new battery
into slot with the battery positive (+) face
up and fasten battery cover with coin.