User's Manual Part 2

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Maintenance and Reference
Maintenance and Reference
1.Please do not carry directly antenna external microphone and headset.
2.With a lint-free rag wiping the dust and stain of interphone trying to prevent
poor contact.
3.Please take out the batteries when you don't use it.
4.Please use neutral detergent to clean it when the buttons and shell of
interphone is dirty after long times to use.