diff --git a/master/master.ino b/master/master.ino
index c2268dd..a6ce98f 100644
--- a/master/master.ino
+++ b/master/master.ino
@@ -32,7 +32,7 @@ struct device {
 };
 
 struct device devices[] = {
-  {0x01, "althead"}
+  {0x00, "althead"}
 };
 
 int numDevices = -1;
@@ -96,6 +96,7 @@ void setup() {
     while (1);
   } else {
     Serial.println("MQTT connected");
+    sendMqttMessage(MQTT_SIM_DEVICE_TOPIC, "Master online");
   }
 
   // subscribe to MQTT topic