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SPON Digital Window Intercom DWT-6507A/B with Physical Button: Main functions • Adopt single DSP multi-channel language auto-control technology, avoiding squeaking and disturb to realize real digital full-duplex intercom. • Recognizing sound source, control ...

SPON Full Duplex IP Window Intercom Kits DWT-6502A/B: key adjustment. 5. With a single tail line design to connect internal and external unit of window intercom to avoid cable loosening and make desktop tidy and more be beautiful. the connection ...

SPON Durable Window Intercom Kits DWT-6505A/B: Main functions • Adopt single DSP multi-channel language auto-control technology, avoiding squeaking and disturb to realize real digital full-duplex intercom. • Adopt full touchable transparent key ...

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SPON Digital Window Intercom DWT-6507A/B with Physical Button