(1) If the user has a device to upgrade the firmware, it is better to upgrade the device to the latest version. The latest version has fixed the problem that the AU915/US915 frequency does not lock the channel.
(1) If the user has a device to upgrade firmware, it is best to upgrade the device to the latest version. The latest version has fixed the problem that the au915 / us915 frequency does not lock the channel.
(1) If the user has equipment with upgraded firmware, it is best to upgrade the equipment to the latest version. The latest version has fixed the problem that AU915/US915 frequency has no locked channel.