diff --git a/main.py b/main.py
index ccce1b7..518aeb9 100644
--- a/main.py
+++ b/main.py
@@ -101,24 +101,24 @@ def mqtt_on_message(client, userdata, msg):
 
     if topic == "strawberry-pi-greenhouse/relay/channel/1":
         if payload == "on":
-            pass
+            relay_ch_1.on()
         elif payload == "off":
-            pass
+            relay_ch_1.off()
     elif topic == "strawberry-pi-greenhouse/relay/channel/2":
         if payload == "on":
-            pass
+            relay_ch_2.on()
         elif payload == "off":
-            pass
+            relay_ch_2.off()
     elif topic == "strawberry-pi-greenhouse/relay/channel/3":
         if payload == "on":
-            pass
+            relay_ch_3.on()
         elif payload == "off":
-            pass
+            relay_ch_3.off()
     elif topic == "strawberry-pi-greenhouse/relay/channel/4":
         if payload == "on":
-            pass
+            relay_ch_4.on()
         elif payload == "off":
-            pass
+            relay_ch_4.off()
 
 
 if __name__ == "__main__":