To be controlled, ZigBee devices require a ZigBee gateway. The Zigbee protocol is not currently supported by mobile phones. so you need a Zigbee gateway to translate the Zigbee protocol into the Wi-Fi protocol so that you may control your Zigbee devices with your smartphone. A ZigBee gateway also centrally maintains ZigBee devices and makes sure they are secure and operating properly. A ZigBee gateway may also connect to these Zigbee gadgets even if the network is down. It is preferable to utilize the standard ZigBee protocol or devices that accept the standard ZigBee protocol in order to prevent the normal operation of devices from different manufacturers because different brands of Zigbee devices will create their own proprietary Zigbee protocols.