diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 9cdcab8..ed3acf3 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -6,8 +6,7 @@
 	"vscode": {
 		"extensions": [
 			"sumneko.lua",
-			"jackmacwindows.vscode-computercraft",
-			"jackmacwindows.craftos-pc"
+			"jackmacwindows.vscode-computercraft"
 		]
 	}
 }
diff --git a/reactor-plc/databus.lua b/reactor-plc/databus.lua
index eeb2260..beee265 100644
--- a/reactor-plc/databus.lua
+++ b/reactor-plc/databus.lua
@@ -76,7 +76,8 @@ end
 -- transmit RPS data across the bus
 ---@param tripped boolean RPS tripped
 ---@param status table RPS status
-function databus.tx_rps(tripped, status)
+---@param emer_cool_active boolean RPS activated the emergency coolant
+function databus.tx_rps(tripped, status, emer_cool_active)
     dbus_iface.ps.publish("rps_scram", tripped)
     dbus_iface.ps.publish("rps_damage", status[1])
     dbus_iface.ps.publish("rps_high_temp", status[2])
@@ -89,6 +90,7 @@ function databus.tx_rps(tripped, status)
     dbus_iface.ps.publish("rps_manual", status[9])
     dbus_iface.ps.publish("rps_automatic", status[10])
     dbus_iface.ps.publish("rps_sysfail", status[11])
+    dbus_iface.ps.publish("emer_cool", emer_cool_active)
 end
 
 -- link a function to receive data from the bus
diff --git a/reactor-plc/panel/front_panel.lua b/reactor-plc/panel/front_panel.lua
index f875b5d..dee017b 100644
--- a/reactor-plc/panel/front_panel.lua
+++ b/reactor-plc/panel/front_panel.lua
@@ -4,6 +4,7 @@
 
 local util       = require("scada-common.util")
 
+local config     = require("reactor-plc.config")
 local databus    = require("reactor-plc.databus")
 
 local style      = require("reactor-plc.panel.style")
@@ -35,6 +36,10 @@ local function init(monitor)
     local header = TextBox{parent=panel,y=1,text="REACTOR PLC - UNIT ?",alignment=TEXT_ALIGN.CENTER,height=1,fg_bg=style.header}
     databus.rx_field("unit_id", function (id) header.set_value(util.c("REACTOR PLC - UNIT ", id)) end)
 
+    --
+    -- system indicators
+    --
+
     local system = Div{parent=panel,width=14,height=18,x=2,y=3}
 
     local init_ok = LED{parent=system,label="STATUS",colors=cpair(colors.green,colors.red)}
@@ -67,6 +72,10 @@ local function init(monitor)
     databus.rx_field("routine__comms_rx", rt_cmrx.update)
     databus.rx_field("routine__spctl", rt_sctl.update)
 
+    --
+    -- status & controls
+    --
+
     local status = Div{parent=panel,width=19,height=18,x=17,y=3}
 
     local active = LED{parent=status,x=2,width=12,label="RCT ACTIVE",colors=cpair(colors.green,colors.green_off)}
@@ -83,6 +92,16 @@ local function init(monitor)
     databus.rx_field("reactor_active", active.update)
     databus.rx_field("rps_scram", scram.update)
 
+    -- only show emergency coolant LED if emergency coolant is configured for this device
+    if type(config.EMERGENCY_COOL) == "table" then
+        local emer_cool = LED{parent=status,x=9,width=14,label="EMER COOLANT",colors=cpair(colors.yellow,colors.yellow_off)}
+        databus.rx_field("emer_cool", emer_cool.update)
+    end
+
+    --
+    -- about footer
+    --
+
     local about   = Rectangle{parent=panel,width=32,height=3,x=2,y=16,border=border(1,colors.ivory),thin=true,fg_bg=cpair(colors.black,colors.white)}
     local fw_v    = TextBox{parent=about,x=2,y=1,text="FW: v00.00.00",alignment=TEXT_ALIGN.LEFT,height=1}
     local comms_v = TextBox{parent=about,x=17,y=1,text="NT: v00.00.00",alignment=TEXT_ALIGN.LEFT,height=1}
@@ -90,6 +109,10 @@ local function init(monitor)
     databus.rx_field("version", function (version) fw_v.set_value(util.c("FW: ", version)) end)
     databus.rx_field("comms_version", function (version) comms_v.set_value(util.c("NT: v", version)) end)
 
+    --
+    -- rps list
+    --
+
     local rps = Rectangle{parent=panel,width=16,height=16,x=36,y=3,border=border(1,colors.lightGray),thin=true,fg_bg=cpair(colors.black,colors.lightGray)}
     local rps_man  = LED{parent=rps,label="MANUAL",colors=cpair(colors.red,colors.red_off)}
     local rps_auto = LED{parent=rps,label="AUTOMATIC",colors=cpair(colors.red,colors.red_off)}
diff --git a/reactor-plc/panel/style.lua b/reactor-plc/panel/style.lua
index 01b00c9..31039d4 100644
--- a/reactor-plc/panel/style.lua
+++ b/reactor-plc/panel/style.lua
@@ -22,7 +22,7 @@ style.header = cpair(colors.black, colors.lightGray)
 style.colors = {
     { c = colors.red,       hex = 0xdf4949 },   -- RED ON
     { c = colors.orange,    hex = 0xffb659 },
-    { c = colors.yellow,    hex = 0xf9fb53 },
+    { c = colors.yellow,    hex = 0xf9fb53 },   -- YELLOW ON
     { c = colors.lime,      hex = 0x16665a },   -- GREEN OFF
     { c = colors.green,     hex = 0x6be551 },   -- GREEN ON
     { c = colors.cyan,      hex = 0x34bac8 },
diff --git a/reactor-plc/plc.lua b/reactor-plc/plc.lua
index 2faefb5..304f3a6 100644
--- a/reactor-plc/plc.lua
+++ b/reactor-plc/plc.lua
@@ -381,7 +381,7 @@ function plc.rps_init(reactor, is_formed, emer_cool)
         _set_emer_cool(self.state[state_keys.low_coolant])
 
         -- report RPS status
-        databus.tx_rps(self.tripped, self.state)
+        databus.tx_rps(self.tripped, self.state, self.emer_cool_active)
 
         return self.tripped, status, first_trip
     end
diff --git a/reactor-plc/startup.lua b/reactor-plc/startup.lua
index 010c36e..ed56dec 100644
--- a/reactor-plc/startup.lua
+++ b/reactor-plc/startup.lua
@@ -18,7 +18,7 @@ local plc      = require("reactor-plc.plc")
 local renderer = require("reactor-plc.renderer")
 local threads  = require("reactor-plc.threads")
 
-local R_PLC_VERSION = "v1.1.5"
+local R_PLC_VERSION = "v1.1.6"
 
 local println = util.println
 local println_ts = util.println_ts