■■■■□ CSA Announces Zigbee 4.0, with New “Suzi” Sub-Gigahertz Long-Range Support
New sub-brand offers improved range and penetration at low power, while the main standard enjoys improved security.
https://www.hackster.io/news/csa-announces-zigbee-4-0-with-new-suzi-sub-gigahertz-long-range-support-3c6f18540c35