Wireless data transmission, RF technology can be used including WIFI, 433, Zigbee and other ways, they belong to the short-range wireless communication technology, and all use ISM license-free band, but they have their own characteristics. In practical applications, there are both similarities and differences.

A, the same

WIFI, 433, Zigbee and other wireless data transmission methods, in the temperature, pressure, temperature and humidity, gas, liquid level and other wireless sensors XL61 wireless sensor data wireless data acquisition and transmission monitoring system to play an important role. For example, the wireless temperature sensor, first connected to the XL62 temperature sensor probe to collect node temperature data, and then through the WIFI, 433, Zigbee and other wireless transmission mode uploaded to the XL90 intelligent gateway host, and then the intelligent gateway and then through the wireless transmission mode to upload the received data to the XL.VIEW monitoring server software.

The difference

1, ZigBee is characterized by low power consumption, high reliability, strong anti-jamming, and easy network deployment. Through the wireless repeater can be very convenient to expand the network coverage to dozens of times. However, compared to WiFi technology, Zigbee is targeted at applications with low transmission rates.

2. WiFi is characterized by high data rates and supports the "always-on" feature. However, it consumes a lot of power and has low reliability and performance, and the sleep-wake time of WiFi devices generally takes 3 to 5 seconds.

3, 433MHz technology uses 433MHz wireless band, the advantage is that the wireless signal penetration is strong, and can spread farther. Its disadvantage is that the data transmission rate is low, using data transparent transmission protocol, so its network security and reliability is also poor.