OK but that’s an MQTT Device Trigger which isn’t the subject of this topic.
Go to Developer Tools → States and look for an event entity whose name suggests it’s related to your remote-control device.
If you have no event entities, or none related to the device, it implies you may not have enabled the following option in Zigbee2MQTT’s configuration.
homeassistant:
experimental_event_entities: true
This post contains a few details about my system’s Zigbee2MQTT configuration.