XBee Gateway provides a low-cost, programmable solution to connect networks of XBee-enabled devices to IP networks, including Zigbee to Wi-Fi or Zigbee to cellular bridge.
Anewtech Systems - Digi XBee3 Zigbee 3.0 - XBee/RF Module - 2.4 GHz Module - Digi International
Digi XBee Zigbee Cellular Gateway Wi-Fi Hub 3G 50001893-07 REV: E
Meet the New Digi XBee® RR Family
Digi XBee Zigbee Gateway
XBRR-24Z8UT-J - Digi XBee RR, 2.4 GHz, Zigbee, U.FL Ant, Through-hole
Long Range 900 MHz OEM RF Module, Digi XBee-PRO 900HP
An XBee L/T/H sensor, Digi Wi-Fi Gateway, and XBee XStick. Mesh
For Digi For Xbee Pro S2c Zigbee Wireless Data Transmission Module Xbp24cz7wit-004 - Automation Modules - AliExpress
DIGI XBee Ind Gateway - ZigBee to Ethernet - Sapply
Digi XBee Industrial Gateway Datasheet
6. The programmable XBee and iDigi - XBee SDK Documentation
XBee® Family RF Modules - DIGI