【 Two-way intercom technology】DESHUN intercom system uses automatic two-way communication technology, without any operation can automatically identify voice signals, say goodbye to signal delay, can be real-time easy intercom, better experience 【 Machine function upgrade 】DESHUN intercom system adopts all-metal body design, with better durability. It not only has the function knob to adjust the volume, but also adds the internal and external one-button sound closure function to reduce unnecessary mutual interference 【Machine quality upgrade 】DESHUN intercom system uses 4 core high strength aluminum foil shielding wire, anti-interference ability is stronger, avoid howling at the same time, but also to ensure that the sound released sounds clearer and more natural, sound quality is better 【Easy to install and use】DESHUN intercom system, equipped with a full English manual, detailed installation guidance and parameter description, only the host and extension with audio cable connection, power adapter one end of the host link, one end of the access to the power supply 【Wide application Scenarios】DESHUN intercom system is suitable for bank window, hospital window, post office window, securities window, embassy visa office, securities company, scenic spot ticket office, station, restaurant and other places, DESHUN, make communication easier