diff --git a/cargo-elevator.lua b/cargo-elevator.lua
index 58d8002..fba2027 100644
--- a/cargo-elevator.lua
+++ b/cargo-elevator.lua
@@ -9,7 +9,7 @@ local FLOORS = {
             return first_char == "A" or first_char == "W"
         end,
         detect = function ()
-            return redstone.getOutput("top")
+            return redstone.getInput("top")
         end,
         call = function ()
             redstone.setOutput("top", true)
@@ -26,7 +26,7 @@ local FLOORS = {
         end,
         detect = function ()
             local relay = "redstone_relay_21"
-            peripheral.call(relay, "getOutput", "top")
+            peripheral.call(relay, "getInput", "top")
         end,
         call = function ()
             local relay = "redstone_relay_21"
@@ -44,7 +44,7 @@ local FLOORS = {
         end,
         detect = function ()
             local relay = "redstone_relay_22"
-            peripheral.call(relay, "getOutput", "top")
+            peripheral.call(relay, "getInput", "top")
         end,
         call = function ()
             local relay = "redstone_relay_22"
@@ -62,7 +62,7 @@ local FLOORS = {
         end,
         detect = function ()
             local relay = "redstone_relay_23"
-            peripheral.call(relay, "getOutput", "top")
+            peripheral.call(relay, "getInput", "top")
         end,
         call = function ()
             local relay = "redstone_relay_23"