How many bytes can xbee transmit method send?


I am using Xbee 3 RF Zigbee module and do its programming with Micropython , I have designed a file which has data and I try to send it wirelessly by Xbee transmit way.
So here I want to ask through this transmit method what are the required bytes for transmitting data? Tell me the maximum size in transmitting method of payload for sending data? using NPN transistor for switching.


You can send up to 256 bytes. This will be broken up into three packets with each being 84 bytes in size.