10 Best Door Phone of 2019

  • Security Through Vision - The indoor 7-inch color monitor...
  • Remote Unlock System - Remotely unlock up to 2 electric...
  • Save Videos and Photos - Videos and photos taking from the...
  • 1pcs outdoor HD camera and 1pcs indoor color screen video...
  • 700TVL IR night vision camera, you can see clearly who rings...
  • 4.3 inch wired audio/video doorbell answering...
  • Upgrade 6pcs computerized doted keys, Lock material iron...
  • Electronic Rim lock adopting the most advanced mechanical...
  • Electric Control Lock have double lock heads inside and...
  • 【TMEZON Smart and Innovative IP video intercom system】...
  • 【About Wifi connection】 Please note the wifi video...
  • 【Multiple Intercom】Up to 2 doorbells can be connected...
  • Upgrade 6pcs computerized doted keys, Lock material iron...
  • Electronic Rim lock adopting the most advanced mechanical...
  • Electric Control Lock have double lock heads inside and...
  • RoHS Compliant No. Color Silver.
  • Warranty 1 year. Type of Packaging Brown Box.
  • Country of Origin Vietnam. Recycled Packaging Yes.
  • 2 SIP Lines
  • HD Voice
  • Video Linkage
  • Security Through Vision - The indoor 7-inch color monitor...
  • Remote Unlock System - Remotely unlock up to 2 electric...
  • Save Videos and Photos - Videos and photos taking from the...
  • Real-time Monitor - Our wireless video doorbell can see,...
  • Take photo - With 7" TFT color display, indoor monitor can...
  • IR Night Vision - Equipped with IR sensor and LED,the camera...
  • Surface-mount door intercom works with a master intercom...
  • For use with the Aiphone LEF and LEM Series master intercoms...
  • Weather-resistant black plastic faceplate surface mounts to...

Door intercom counselor

A Door Phone is a communication and access control facility that allows visitors to an apartment or house to be identified prior to their entry and, if necessary, dismissed or joyfully welcomed. The systems are also referred to as intercom, door speakerphone or intercom. They transmit voice, pictures or videos using electrical signals and always consist of two units, one outdoor unit and one or more indoor units. The outdoor unit is usually installed in multi-family houses next to the front door, but can also be located in single-family homes with a front garden in or at the entrance gate. The indoor unit is usually located near the apartment door in rental apartments. For single-family homes, there may be several indoor units, which are then optionally positioned. Indoor units also need
not necessarily an integral part of Door Phone be, but it may be z. B. also to a Smartphoneact.

Audio, video and ringing – the main components of door intercoms

Both outdoor and indoor units are always on all systems microphoneand a speakeravailable. For outdoor units, it is usually discrete device components built into the housing that allow hands-free operation. This can also be the case with indoor units, but they are often also installed in a telephone receiver-like housing with cable connection. In simple systems, only audio in intercom technology is transmitted, ie. H. both communication participants can talk at the same time. In more comfortable systems, a camera is integrated in the outdoor unit and transmits a video recording or individual pictures of the inlet-desiring. As a rule, in the to Door Phone belonging terminals also integrated ringing, d. H. In the outdoor unit of apartment buildings there is a block with buttons and in the indoor units the bell. For single-family homes, there is only one button on the outside. The indoor unit is also often equipped with a push-button to open the front door, so that the entire control of the front door is done with a device and rented apartments the bell of the apartment door is also integrated with. As a transmission medium multicore copper or fiber optic cables, radio or Wi-Fi are common in door intercoms.

Comfortable access control – some advanced features of door intercom systems

A higher level of security is indeed a crucial, but not the only advantage of one Door Phone , In addition, it can also be quite convenient, because some variants are equipped with a mobile indoor unit that contains the bell and with which the door can be opened from any position – convenient for people who do not want to leave their seats when opening the door. A high degree of security is provided by systems with image or video transmission, some of which are also designed for night-time operation. They offer themselves for the gate of a home, where evt. No sufficient lighting is installed. But even as an additional system to an existing intercom in a tenement so that the apartment door can be effectively monitored with switched off stairwell lighting, because the usual spy in the apartment door is useless in this case.

Pure language equipment or with video – the different technologies of door intercom systems

Simple door intercoms
Simple systems offer only the functions ringing, intercom and door opening. They are usually wired, the outdoor station is designed for hands-free calling and the indoor unit communicates via a telephone receiver. Such systems are offered with an indoor station and a bell button on the outdoor unit or for rental houses with several apartments as a set with a defined number of indoor units and the same amount of doorbell button on the outdoor unit.

Door intercoms with picture or video
His interlocutor before opening the door by the Door Phone Being able to see it can also be beneficial in many situations. For video door intercom systems and systems with a picture, the outdoor unit contains a camera and the indoor unit a display. Many video door phones also include a night vision mode. Here, LEDs illuminate the environment in front of the outdoor unit and allow a relatively clear detection of persons up to a distance of about 2 meters. Another important criterion is the reception area. If this is too low, a person standing slightly to the side of the camera will no longer be recognized. For some video systems, the outer part may need additional power. Simple models can usually be connected via the pre-installed in tenements 2-wire connection. However, more modern variants often require an additional connection to the house power or need an IP connection.

Door intercoms with radio connection
The technology of a radio video door intercom is much more complex than that of a common video door phone. Therefore, the variety of models, due to the not so high number offered facilities, also much more manageable than the other transmission technologies. The main difficulty is that audio and video signals are very difficult to transmit over a common radio signal. Some manufacturers have solved the problem brilliantly from their point of view. They offer as a wireless video door phone systems that do not transmit videos, but instead send several individual images to the indoor unit. The DECT standard is also limited, since it is designed for in-house phones and not for video transmission. However, such systems are in principle usable as a wireless door intercom, but the range is limited. However, they also offer some advantages such as: B. recording on one Answering machineor redirect to smartphone. The above reasons led to the fact that the technology of current radio video door intercom systems mostly based on manufacturer-specific standards for lossless transmission. As a result, devices from different manufacturers are incompatible with each other and you bind in the course of a manufacturer. Against this background, it may be advisable to consider whether a simple wireless bell in 2-wire technology would not be a good solution. Such a door entry system is much cheaper, easy to install and less susceptible to interference.

IP door intercom and Wi-Fi
In IP (Internet Protocol) based systems, the call participants are connected via the Internet or the internal home network. The connection of the intercom to the Internet or to the home network is possible via a network cable or or via a WLAN connection. A ready-to-operate network is a prerequisite and when the intercom is integrated, it automatically receives from the WLAN routerover the DHCP protocol in the usual way assigned an IP address. This enables seamless integration into any existing network. Even a control with the smartphone is then feasible in some equipped with appropriate functionality IP door intercoms. Power is typically supplied through the network cable, so there is usually no need for additional power. This does not apply to WLAN-based systems. You need an additional power connection, which can usually be realized with a simple adapter without having to connect a network cable. For IP video door intercoms the here shown also applies.

The connection technology

The connection of IP devices are from the routerconfigured. This applies to both wired IP technology and WLAN technology. All other wired devices can be connected via 4-, 3- or 2-wire connections, depending on the type. The latest technology is 2-wire based. Older systems, however, can usually be adapted to this. 2-wire technology transmits video, audio and power over just 2 wires. The connection is called a bus to whic
h all devices are connected. For interference-free transmission, the cable cross-section should not be less than 0.75 mm². If older components are to be used further, their simple upgrade to state-of-the-art technology is usually possible. Older systems with a 4-wire bus can be converted to modern transmission technology with two additional short cable connections. Corresponding retrofit material and instructions are available online or from stationary retailers. The conversion effort is low and offers a worthwhile alternative to a new device purchase.

*Last update on 2019-08-13 / Affiliate links(we get a commission when you buy on amazon) / Images from Amazon Product Advertising API