The system is mainly composed of host, extension, UPS power supply, electronic lock, decoder, protector, video amplifier, signal repeater, signal converter, video switcher, host selector, network aggregator, hub, digital signal converter , optical transceiver and door closers. According to the type, it can be divided into direct-press type, digital type, digital type household pass, direct-press type video intercom, digital video intercom, digital type household video intercom and so on. Host Different hosts (7 photos) The host computer is the control core part of the video doorbell system. The transmission signal and the electric lock control signal of each household extension are controlled by the host computer. Its circuit board is shock-damped and installed, and is protected from moisture. It has strong anti-vibration and moisture-proof capability. With night lighting, the appearance is beautiful and generous. Extension The extension is a kind of talk machine, which is usually intercommunicated with the host. However, the current household door-to-door doorbell system is combined with the host to form an internal telephone system to complete the telephone contact of the users in the system, which is more convenient to use. It is divided into visual extensions, non-visual extensions. It has electric lock control function and monitoring function, which is usually installed at the door of the user's home, which is convenient for the residents to talk with the visitors. UPS power supply Its function is mainly to keep the video doorbell system from power failure. Under normal conditions, it is in a state of charging. When the power is off, the UPS power supply is in the state of supplying power to the system. Now the video doorbell system, manufacturers generally do not have UPS batteries, mainly because the visual system consumes too much power, and the general small-capacity UPS battery can not guarantee the use time!
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A highly eco-efficient escalator optimized for retail environments that provides a smooth, safe ride and ensures a pleasant shopping experience.
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