Founded in France in 1860, Legrand is the world's largest producer of switches and sockets. With the adjustment of the business, Legrand began to set foot in the smart home appliance industry, and now becomes a global expert in electrical and intelligent building systems. In the field of building intercom, Legrand has three major brands in China: shidean, Legrand and BTicino.
 
Bticino is a high-end brand of smart home introduced by Legrand company from Italy, the biggest advantage is personalized customization, using a modular design concept, each component or function can be customized according to the wishes of consumers, not only to prevent outsiders from breaking in, but also to prevent indoor security problems, such as gas leaks, water leaks, power outages, etc., if necessary, take corresponding countermeasures, this comprehensive home security protection is unique in building intercom products, It is more suitable for consumers who have higher requirements for building intercom systems.
 
The Colore building intercom system integrates the artistic sense of the classical oil painting frame into the indoor unit, which is not only a building intercom, but also can be used as a home painting. At the same time, there are special security protection functions, the door is not closed for 120 seconds alarm, the use of coercion password to open the door alarm, the main and extension anti-demolition alarm, these security performance functions are not available in other brands, Colore is undoubtedly the first choice for high-end residences.
 
Seetech was the first company to participate in the development of national industry standards for public safety precautions, and joined the Legrand Group in 2006. The D2009 system is the first building intercom system in China. The D9000 system is a new generation of intelligent digital building intercom system equipped with industrial-grade chips, which can be used for remote arming, smart home control, and can be extended to mobile terminals such as mobile phones and tablets. Compared with Bticino and Colore, the price of the D2009 system indoor unit is generally more than 1000 yuan, and the price of the lower-end 980 system is generally between 600-1000 yuan.