| Compared 2.4GHz wireless network technology | |
| 2.4GHz wireless network frequency is ISM frequency. It is the universally used frequency which is of low radiation and environment-protecting. 2.4GHz wireless network, which supports FHSS, has 125 channels of abundant capacity. 125 channels' FHSS transmission enables the data directives to keep away from knocking each other. 2.4GHz wireless network can communicate smoothly, and the directives will not disturb each other. It can reach a fast transmitting speed (5Mbps), so it can also transmit images. 2.4GHz wireless network's transmitting distance is relatively father (200 meters effective transmitting distance), and it will not effected by the transmitting direction. Besides, it also supports bidirectional communication.
2.4GHz wireless signal receiving and dispatching is not disturbed by the barrier, and position direction or the angle limit. The signal receive fast, accurate, reliable, also 2.4GHz wireless signal support bidirectional communication. Simultaneously has 125communications channels in the support frequency-hopping technology, the communication channel is not easily occupied. In the network cover scope, does not have disturbance, does not have radiation, globally used, green environmental protection.
315/433MHz wireless signal receiving and dispatching is not disturbed by the barrier, and position direction or the angle limit. But the 315/433MHz wireless signal only has a channel, the communication channel is easily occupied. The signal possibly can appear mutually disturbs, also the majority uses in the intelligent control of 315/433MHz technology only support unidirectional communication, the communication speed is less than10Kbps.
The infrared (IR) transmission speed is slower also can receive the thing to cover, when use must straight line aim at the receiver (have point-to-point transmission signal). | |
| Add Time: 2009-9-24 16:35:22 |  |
