diff --git a/hydrobot_sensor_sim.py b/hydrobot_sensor_sim.py
--- a/hydrobot_sensor_sim.py
+++ b/hydrobot_sensor_sim.py
@@ -20,12 +20,12 @@ while True:
     humid = max(0x00, min(0xFF, random.randint(-1, 1)/100 + humid))
     press = max(0x00, min(0xFF, random.randint(-1, 1) + press))
     
-    message = b.get_message("AirTemp")
-    message.get_signal("Temperature").value = temp
-    message.get_signal("Humidity").value = humid
-    message.get_signal("Pressure").value = press
+    print(b.AirTemp.Temperature.value)
     
-    frame = b.build_frame("AirTemp")
-    dev.send(frame)
+    b.AirTemp.Temperature.value = temp
+    b.AirTemp.Humidity.value = humid
+    b.AirTemp.Pressure.value = press
+    
+    dev.send(b.AirTemp.encode())
     
     time.sleep(1)