# eMQTT $SYS Topics ## Version $SYS/broker/version ## Uptime $SYS/broker/uptime ## Recevied and Sent $SYS/broker/bytes/received $SYS/broker/bytes/sent $SYS/broker/packets/received $SYS/broker/packets/sent $SYS/broker/messages/received $SYS/broker/messages/sent $SYS/broker/messages/retained $SYS/broker/messages/stored $SYS/broker/messages/dropped ## Client Presence $SYS/broker/clients/connected $SYS/broker/clients/disconnected $SYS/broker/clients/${clientId}/presences/online $SYS/broker/clients/${clientId}presences/offline