Job Recruitment Website - Property management - Can the shutter door be opened and closed on the mobile phone?
Can the shutter door be opened and closed on the mobile phone?
Read the data first, then brush it on the entrance guard several times, and then compare it with the previous data. If the data changes, it will scroll.
The principle of rolling code is that the encoder detects the key input, wakes up the system from the power-saving state, adds 1 to the synchronous count, encrypts the key with serial number to form ciphertext data, and then sends it out with data such as key value. Because the synchronization count value sent each time is different, even if the same key is pressed many times, the synchronization count will automatically scroll forward, and the transmitted codeword will not happen again. The synchronization count is encrypted by DES and the 64-bit encoder serial number. DES key is unique to the manufacturer and must be kept secret. The encrypted ciphertext is transmitted through the radio frequency system.
- Related articles
- What are the advantages and disadvantages of the northern suburb school district?
- Where is the sunshine elegant residence in Maanshan?
- Which school is Evian Foshan in Shangcheng?
- Does the property have the right to be fined for unauthorized modification of heating pipes?
- Where is the address of the cloud picture attached to Xi Annan Feihong?
- What is the telephone number of Changzhi Shangshufang Sales Department?
- Can Nanchang Poly Lanhai Jiaju Property be changed?
- What brand of Xuzhou sanitation high-pressure cleaning machine is good?
- Which street office does Lv Jing Future City belong to?
- What is the telephone number of the sales and marketing center of Zhongwei National Venture City?