1. Operating Frequency
Wireless bridges operate at two frequencies: 2.4G and 5.8G. These two frequencies have different characteristics. Generally, 2.4G wireless bridges are the mainstream frequency band, offering good compatibility and diffraction capabilities, but with poorer anti-interference performance. 5.8G wireless bridges are less congested, have better anti-interference capabilities, and offer longer transmission distances, but have poorer diffraction capabilities.
2. Transmission Rate
Wireless bridges offer various transmission rates, such as 150Mbps, 300Mbps, 800Mbps, etc. The appropriate rate should be determined based on the requirements of the wireless surveillance system.
3. Antenna
The antenna is a crucial component of a wireless bridge. It is used to send and receive wireless signals. Without an antenna, the wireless bridge cannot communicate. There are many types of antennas, including omnidirectional and directional antennas. The higher the antenna gain, the better the performance of the wireless bridge.
4. Power Supply Method
Since it is primarily used outdoors, such as in reservoirs and forests, if there is no power connection, other power supply methods are needed. POE (Power over Ethernet) is generally a good option. In remote areas and forest reserves, solar or wind power is often used.
5. Security
Like wireless routers and wireless APs, wireless bridges require setting a password or encrypting the wireless signal. Otherwise, numerous terminals will access the network, affecting the wireless surveillance transmission.
6. Stability
The stability of the wireless bridge is very important. If it malfunctions or crashes, or the speed slows down, the surveillance system will be compromised. This is related to the wireless bridge's hardware, such as the chip, motherboard, memory, and cache. Of course, even with a stable wireless bridge, proper installation is crucial for optimal performance.
7. Transmission Distance
Wireless surveillance projects require transmission over varying distances. Wireless bridges offer different transmission distances. Some transmit 1 to 5 kilometers, others 5 to 10 kilometers, and some over 20 kilometers. The appropriate transmission distance must be determined based on the monitoring requirements. The maximum transmission distance of the wireless bridge should be greater than the required monitoring transmission distance.