EnOcean devices (at least the PTM215Z) can connect to any zigbee gateway

[Weltherrscher]

No need for Hue Bridge anymore.
It should be possible to connect them to any Zigbee Gateway:

1. push the Button 1
2. push Button 3 for 10 secs
3. push buttons 2 & 3 together
4. push button 1 again

Now it should be found by any Zigbee Gateway.
Confirmed working with Senic + Gira Friends of Hue Switch, a Sonoff Gateway flashed to Tasmota and HASSIO with zigbee2mqtt addon.

[RedQuarck]

Using these:
https://zigbee.blakadder.com/Senic_100119.html
with Z2M, can confirm this is working fine.

Also referenced in Z2M database:
https://www.zigbee2mqtt.io/devices/PTM_215Z.html