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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: structure design to completely eliminate resonance of device itself and achieve pure and natural sound effect. 7. Available for customizing personalized service voice message and manually broadcast ...

SPON Durable Window Intercom Kits DWT-6505A/B: light on. • Recognizing sound source, control environment noise, automatically adjust volume and restore the original sound. • Providing three mode scene(quiet, standard, noisy), support one-key ...

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