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MJY test Tech.co., Ltd.
Beijing Jianglanbo Sales Co Ltd.Come On 0702
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3 digits big size simple queue number calling system

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3 digits big size simple queue number calling system

3 digits big size simple queue number calling system

simple queue calling keypad and 4 digits number LED dispaly Product Description Keypad Display Size 130*87*23mm 340*158*41mm Frequency 433.92Mhz Prompt mode DingDong or 'XXX please' Wide Market School ...

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