diff --git a/code/game/machinery/alarm.dm b/code/game/machinery/alarm.dm
index 271518c4ed1..ffb7cc0f033 100644
--- a/code/game/machinery/alarm.dm
+++ b/code/game/machinery/alarm.dm
@@ -148,13 +148,13 @@
 	switch(preset)
 		if(AALARM_PRESET_VOX) 
 			TLV = list(
-				"oxygen"         = new/datum/tlv(-1.0, -1.0,-1.0,-1.0), // Partial pressure, kpa
+				"oxygen"         = new/datum/tlv(-1.0, -1.0, 1, 2), // Partial pressure, kpa
 				"nitrogen"       = new/datum/tlv(16, 19, 135, 140), // Partial pressure, kpa
-				"carbon dioxide" = new/datum/tlv(-1.0, -1.0,-1.0,-1.0), // Partial pressure, kpa
-				"plasma"         = new/datum/tlv(-1.0, -1.0,-1.0,-1.0), // Partial pressure, kpa
-				"other"          = new/datum/tlv(-1.0, -1.0,-1.0,-1.0), // Partial pressure, kpa
-				"pressure"       = new/datum/tlv(-1.0, -1.0,-1.0,-1.0), /* kpa */
-				"temperature"    = new/datum/tlv(-1.0, -1.0,-1.0,-1.0), // K
+				"carbon dioxide" = new/datum/tlv(-1.0, -1.0, 5,  10), // Partial pressure, kpa
+				"plasma"         = new/datum/tlv(-1.0, -1.0, 0.2, 0.5), // Partial pressure, kpa
+				"other"          = new/datum/tlv(-1.0, -1.0, 0.5, 1.0), // Partial pressure, kpa
+				"pressure"       = new/datum/tlv(ONE_ATMOSPHERE*0.80,ONE_ATMOSPHERE*0.90,ONE_ATMOSPHERE*1.10,ONE_ATMOSPHERE*1.20), /* kpa */
+				"temperature"    = new/datum/tlv(T0C, T0C+10, T0C+40, T0C+66), // K	
 			)
 		if(AALARM_PRESET_SERVER) 
 			TLV = list(
@@ -168,7 +168,7 @@
 			)
 		if(AALARM_PRESET_COLDROOM) 
 			TLV = list(
-				"oxygen"         = new/datum/tlv(  16,   19, 135, 140), // Partial pressure, kpa
+				"oxygen"         = new/datum/tlv(16, 19, 135, 140), // Partial pressure, kpa
 				"nitrogen"       = new/datum/tlv(-1.0, -1.0, -1.0, -1.0), // Partial pressure, kpa
 				"carbon dioxide" = new/datum/tlv(-1.0, -1.0,   5,  10), // Partial pressure, kpa
 				"plasma"         = new/datum/tlv(-1.0, -1.0, 0.2, 0.5), // Partial pressure, kpa