Lithium batteries are much better than lead acid batteries. If you use a 6032 lead acid battery to run takeaway, it will be a little less. If you use 7232 lithium battery, there is no problem. Don't buy another car if you already have one. Yes, it pays to buy a set of lead acid batteries that won't last a year. You can then use lithium batteries. , which will save you a lot of investment.
It is not harmful to the body to always turn on Bluetooth on your mobile phone. No need to worry at all. “Because Bluetooth emits the smallest radiation and has the least harm to the human body among all wireless technologies. The widespread use of Bluetooth technology in the medical field is a clear example of this.
Bluetooth uses the microwave radio spectrum from 2.402 GHz to
2.480 GHz. The powerThe maximum power of a Bluetooth radio device is 100 mW for category 1, 2.5 mW for category 2 and 1 mW for category 3. Even the maximum power of class 1 is lower than the minimum power of a mobile phone. The output of UMTS and W-CDMA is 250mW, that of GSM1800/1900 is 1000mW, and that of GSM850/900 is 2000mW.
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Bluetooth (Bluetooth?
): It is a wireless technology standard that can realize communication between fixed devices, mobile devices and personal buildings. area networks. Neck-to-neck data exchangerte distance (using UHF radio waves in the ISM band from 2.4 to 2.485 GHz). Bluetooth technology was created by telecommunications giant Ericsson in 1994 as an alternative to RS232 data lines. Bluetooth can connect multiple devices, solving the problem of data synchronization.
Today, Bluetooth is managed by the Bluetooth Technology Alliance (Bluetooth
Special
Interest
Group, called SIG). Bluetooth Technology The alliance has more than 25,000 member companies around the world, spanning multiple domains such as telecommunications, computers, networking and consumer electronics. The IEEE lists Bluetooth technology as IEEE
802.15.1, but this standard is no longer maintained. The Bluetooth SIG oversees the development of Bluetooth specifications, manages certification programs, and protects trademark rights. A manufacturer's device must comply withux standards of the Bluetooth SIG before it can be marketed as a “Bluetooth device”. Bluetooth technology has a proprietary network distributed to devices that comply with the standard.