What kinds of doorbells are there? How to choose the doorbell?

1, wireless doorbell. Wireless doorbell is suitable for villas, apartments, personal houses, hotels and so on. There are many applicable scenarios and good experience. The installation of wireless doorbell is very simple, and there is no need for wiring connection. As long as it is within the wireless coverage range, it can move at will, without any restrictions, and the cost is very low. In addition, the cost-effective wireless doorbell can transmit up to 280 meters in an open place, and can penetrate two or three walls and anti-theft steel doors, with a service life of 20 years and outstanding performance.

2. Wireless non-visual doorbell. Wireless non-visual doorbell can be operated remotely, but because there is no visual interface, people can only tell who the outsiders are by sound. When people press the wireless invisible doorbell outside the door, people can hear the sound at home and then open the door in time. Compared with the traditional wireless doorbell, the wireless invisible doorbell integrates wireless intercom and remote door opening, which can be used for talking and remote door opening, and at the same time avoids the trouble of wiring in wired system, and is an upgraded product of the traditional doorbell.

3. Wireless visual doorbell. Visual doorbell means that people can see the appearance of visitors through video and hear each other's voice at the same time, which is very practical. In addition, the wireless visual doorbell can play the role of outdoor monitoring, remote unlocking, photo archiving, anti-disassembly alarm, etc., and improve the safety of people's living environment.

4. Video door phone. Video intercom is frequently used in residential quarters. It is the contact system of audio-visual communication between residents and visitors, and the first line of security for illegal invasion of residential quarters. When the visitor is confirmed, people can use the door lock control key on the extension to open the electronic door lock on the host at the entrance of the unit building and allow the visitor to enter. On the other hand, all people who are not in the building and strange visitors are not allowed to enter.

How to choose the doorbell?

1, according to the brand choice. Whether you buy a doorbell or other products, you'd better buy brand products. The quality of brand doorbell is guaranteed and the after-sales service is better. If people covet cheap and buy three-no products, then quality problems will easily occur.

2. According to the performance selection, the buzzer-sounding doorbell is cheap, the musical doorbell sounds pleasant, the electromagnetic doorbell sounds crisp and pleasant but consumes a lot of electricity, and the Ding-Dong doorbell (electromagnetic and integrated circuit type) is better than Ding-Dong reverberation, so people can choose the doorbell according to their own needs. If you just want to save money, you can buy a buzzer doorbell, otherwise you can buy other doorbells.

3. Choose according to endurance. Because the doorbell is often used outside the door, its endurance is very important. What's the use of this doorbell if it only takes a week to charge? Charging is troublesome. Therefore, people are advised to choose a doorbell with a lithium battery capacity of 5000 mA, so that it can be recharged once every 2-3 months.