The Digi XBee3 Zigbee Mesh Kit offers a great way to learn how to use Digi XBee3 RF modules for device connectivity and Zigbee-based mesh networking.
Part number XK3-Z8S-WZM does not have the XB3-24Z8UM module. It comes with the XB3-24Z8US-J.
A comparison table showing the differences between the two modules can be found here: XBee Module Comparison
This set of tools can be used to develop Digi’s XBee 3 series modules through the UART interface.
Applicable part numbers
602-2193-ND
602-2210-ND