diff --git a/MAXDevice.py b/MAXDevice.py
new file mode 100644
index 0000000..f88f0ad
--- /dev/null
+++ b/MAXDevice.py
@@ -0,0 +1,12 @@
+from MAXPacket import PushButtonState
+
+
+class MAXDevice:
+    def __init__(self, address):
+        self.address = address
+
+
+class MAXPushButton(MAXDevice):
+    def __init__(self, address):
+        super(MAXPushButton, self).__init__(address)
+        self.state = PushButtonState.UNKNOWN
diff --git a/MAXPacket.py b/MAXPacket.py
index 79507bb..e3f1098 100644
--- a/MAXPacket.py
+++ b/MAXPacket.py
@@ -118,6 +118,20 @@ class MAXAckPacket(MAXPacket):
         return result
 
 
+class MAXCubeAckPacket(MAXPacket):
+    def __init__(self, message_counter: str, message_flag: str, sender_address: str, dest_address: str,
+                 group_id: str, acknowledged):
+        self.set_values(message_counter, "01", message_flag, sender_address, dest_address, group_id)
+        if acknowledged:
+            self.payload = "01"
+        else:
+            self.payload = "81"
+
+    def to_string(self):
+        result = "{}\nMAXCubeAckPacket: payload={}".format(super().to_string(), self.payload)
+        return result
+
+
 class PushButtonState(Enum):
     AUTO = 0
     ECO = 1
diff --git a/MAXPacketHandler.py b/MAXPacketHandler.py
index 883546c..3f3d257 100644
--- a/MAXPacketHandler.py
+++ b/MAXPacketHandler.py
@@ -1,6 +1,7 @@
 from MAXCube import MAXCube
 from MAXPacket import MAXPacket, MAXPacketFactory, MAXPairPingPacket, MAXPairPongPacket, MAXAckPacket, \
-    MAXResetPacket, MAXWakeUpPacket, MAXSetGroupIdPacket
+    MAXResetPacket, MAXWakeUpPacket, MAXSetGroupIdPacket, MAXPushButtonPacket, MAXCubeAckPacket
+from MAXDevice import MAXDevice, MAXPushButton
 
 from time import sleep
 from enum import Enum
@@ -26,6 +27,7 @@ class MAXPacketHandler:
         self.cube = cube
         self.quit_flag = False
         self.handshakes = []
+        self.devices: list[MAXDevice] = []
 
     def handle_msg(self, pkt: MAXPacket):
         print(pkt.to_string())
@@ -36,7 +38,7 @@ class MAXPacketHandler:
                 pong = MAXPairPongPacket(message_counter="00", message_flag="00", sender_address=self.cube.addr,
                                          dest_address=pkt.sender_address, group_id="00")
                 pong_str = pong.serialize()
-                print(pong.to_string())
+                #print(pong.to_string())
                 self.cube.request(pong_str)
                 handshake.state = HandshakeState.PONG_SENT
             elif isinstance(pkt, MAXAckPacket):
@@ -63,7 +65,22 @@ class MAXPacketHandler:
                             cur_handshake.state = HandshakeState.GROUP_ID_SENT
                     if cur_handshake.state == HandshakeState.GROUP_ID_SENT:
                         cur_handshake.state = HandshakeState.GROUP_ID_ACK
-
+            elif isinstance(pkt, MAXPushButtonPacket):
+                dev = None
+                for known_dev in self.devices:
+                    if known_dev.address == pkt.sender_address:
+                        dev = known_dev
+                        break
+                if dev is None:
+                    dev = MAXPushButton(pkt.sender_address)
+                dev.state = pkt.button_state
+                print("Button {} state={}".format(dev.address, dev.state))
+                if not pkt.retransmit:
+                    act_pkt = MAXCubeAckPacket(pkt.counter, "00", self.cube.addr,
+                                               pkt.sender_address, pkt.group_id, True)
+                    act_str = act_pkt.serialize()
+                    #print(act_str)
+                    self.cube.request(act_str)
         else:
             print("Paket is not ours!")
 
@@ -73,6 +90,4 @@ class MAXPacketHandler:
             if resp is not None and resp[0:1] == "Z":
                 pkt = MAXPacketFactory.create_packet(resp)
                 self.handle_msg(pkt)
-
-
             sleep(0.1)
\ No newline at end of file
diff --git a/main.py b/main.py
index d42c204..d73ca78 100644
--- a/main.py
+++ b/main.py
@@ -5,7 +5,7 @@ DEBUG = True
 
 if __name__ == '__main__':
     cube = CUL("123456")
-    cube.connect("COM11")
+    cube.connect("COM5")
     print(cube.version_string())
     handler = MAXPacketHandler(cube)
     handler.receive_loop()