diff --git a/README.md b/README.md
index cff33c1..cb95968 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ MoreMesecons is a mod for minetest wich adds some mesecons items.
 * `Injector Controller` : This node is usefull to activate/deactivate a pipeworks filter injector : it sends a blinky signal.
 * `Player Killer` : This block kills the nearest player (with a maximal distance of 8 blocks by default) (if this player isn't its owner) when it receives a mesecons signal.
 * `Sayer` : This node sends a message to every players inside a radius of 8 nodes.
-* `Signal Changer` : If it receives a signal on its pin "F", it turns on. If it receives a signal on its pin "O", it turns off.
+* `Signal Changer` : If it receives a signal on its pin "F", it turns on. If it receives a signal on its pin "O", it turns off. Note : an inverted signal is sended at the other end of the arrow.
 * `Switch Torch` : It connects just like Mesecons Torch. If it receives a signal, it turns on, and if it receives a second signal, it turns off.
 * `Teleporter` : If you place one teleporter, if it receives a mesecons, it teleports the nearest player on itself. If you place two teleporters on the same axis, if one receives a mesecons signal, it teleports the nearest player on the second (with a maximal distance of 50 nodes by default). The player teleporter must be inside a radius of 25 nodes.
 * `Temporary Gate` : If it receives a mesecons signal, whatever its duration, a mesecons signal is send with a fixed duration. You can change it by right-click (in seconds) (you can write for example 0.2 to send a pulse, or 20 to send long signals).
diff --git a/moremesecons_signalchanger/init.lua b/moremesecons_signalchanger/init.lua
index 3d7a4a3..61a5627 100644
--- a/moremesecons_signalchanger/init.lua
+++ b/moremesecons_signalchanger/init.lua
@@ -4,7 +4,8 @@ local nodebox = {
 }
 
 local function signalchanger_get_output_rules(node)
-	local rules = {{x=1, y=0, z=0}}
+	local rules = {{x=1, y=0, z=0},
+			{x=-1, y=0, z=0}}
 	for i = 0, node.param2 do
 		rules = mesecon.rotate_rules_left(rules)
 	end
@@ -25,10 +26,12 @@ local update = function(pos, node, link, newstate)
 	local input_on = meta:get_int("input_on") == 1
 	local input_off = meta:get_int("input_off") == 1
 	if input_on then
-		mesecon.receptor_on(pos, signalchanger_get_output_rules(node))
+		mesecon.receptor_on(pos, {signalchanger_get_output_rules(node)[1]})
+		mesecon.receptor_off(pos, {signalchanger_get_output_rules(node)[2]})
 		minetest.swap_node(pos, {name = "moremesecons_signalchanger:signalchanger_on", param2 = node.param2})
 	elseif input_off then
-		mesecon.receptor_off(pos, signalchanger_get_output_rules(node))
+		mesecon.receptor_off(pos, {signalchanger_get_output_rules(node)[1]})
+		mesecon.receptor_on(pos, {signalchanger_get_output_rules(node)[2]})
 		minetest.swap_node(pos, {name = "moremesecons_signalchanger:signalchanger_off", param2 = node.param2})
 	end
 end
@@ -46,7 +49,6 @@ mesecon.register_node("moremesecons_signalchanger:signalchanger", {
 	groups = {dig_immediate = 2},
 	mesecons = {
 		receptor = {
-			state = mesecon.state.off,
 			rules = signalchanger_get_output_rules
 		},
 		effector = {
@@ -55,11 +57,14 @@ mesecon.register_node("moremesecons_signalchanger:signalchanger", {
 		},
 	},
 	tiles = {"moremesecons_signalchanger_off.png"},
+	on_construct = function(pos)
+		local node = minetest.get_node(pos)
+		mesecon.receptor_on(pos, {signalchanger_get_output_rules(node)[2]})
+	end
 },{
 	groups = {dig_immediate = 2, not_in_creative_inventory = 1},
 	mesecons = {
 		receptor = {
-			state = mesecon.state.on,
 			rules = signalchanger_get_output_rules,
 		},
 		effector = {
diff --git a/moremesecons_signalchanger/textures/moremesecons_signalchanger_off.png b/moremesecons_signalchanger/textures/moremesecons_signalchanger_off.png
index 6996c63..61303ca 100644
Binary files a/moremesecons_signalchanger/textures/moremesecons_signalchanger_off.png and b/moremesecons_signalchanger/textures/moremesecons_signalchanger_off.png differ
diff --git a/moremesecons_signalchanger/textures/moremesecons_signalchanger_on.png b/moremesecons_signalchanger/textures/moremesecons_signalchanger_on.png
index 7933015..d325f2e 100644
Binary files a/moremesecons_signalchanger/textures/moremesecons_signalchanger_on.png and b/moremesecons_signalchanger/textures/moremesecons_signalchanger_on.png differ