Weierwei Vev-3288s Manual -

Adjust from grades 0–9 to filter out background noise. Enabling Keypad Lock:

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The is a professional VHF/UHF handheld transceiver known for its durability and extensive feature set suitable for security, construction, and outdoor recreation. Below are the key features and operational highlights derived from its technical manual. Core Features Adjust from grades 0–9 to filter out background noise

If you tell me what you're trying to do, I can give you more specific advice: Do you need help to factory defaults? Weierwei Vev-3288s Manual