There are several main frequency of garage rolling code remote controller? Which is the most

 

 

Mainly domestic 315MHZ, abroad is generally 433MHZ, there are some special frequency bands.

Frequency: Frequency is the number of periodic changes completed per unit of time. It is the amount that describes the frequency of periodic movements. The common symbol is f or ν. The unit is one second and the symbol is s-1. In commemoration of the contribution of the German physicist Hertz, people named the frequency unit Hertz, abbreviated as “Hel” and the symbol is Hz. Each object has its own amplitude-independent frequency determined by its nature, called the natural frequency. The concept of frequency is used not only in mechanics and acoustics, but also in electromagnetics, optics and radio technology.

The rolling code is currently mainly used in RKE (Remote Keyless Entry) system for authentication.

The remote control is a device used to remotely control the machine. Modern remote controls are mainly composed of integrated circuit boards and buttons that are used to generate different messages (communication definition: a group of interrelated meaningful symbols that can express some kind of complete meaning). composition. The passenger car door remote controller uses the latest technology code decoding to control the door pump solenoid valve in a flash mode to achieve the purpose of opening and closing the automatic door. It is used to remotely open and close the doors of passenger cars (bus, CMB) to avoid the driver's trouble of getting on the car every time. The main components of the transmitter part of the remote control are infrared light emitting diodes. It is actually a special light-emitting diode. Since its internal material is different from ordinary light-emitting diodes, it emits infrared light instead of visible light when a certain voltage is applied to both ends.