diff --git a/pyisy/constants.py b/pyisy/constants.py
index 3fef6d7..7e2ef01 100644
--- a/pyisy/constants.py
+++ b/pyisy/constants.py
@@ -192,6 +192,7 @@
 
 CLIMATE_SETPOINT_MIN_GAP = 2
 
+CMD_BACKLIGHT = "BL"
 CMD_BEEP = "BEEP"
 CMD_BRIGHTEN = "BRT"
 CMD_CLIMATE_FAN_SETTING = "CLIFS"
@@ -338,6 +339,7 @@
     "WINDCH": "wind_chill",
     "WINDDIR": "wind_direction",
     "WVOL": "water_volume",
+    CMD_BACKLIGHT: "backlight",
     CMD_BEEP: "beep",
     CMD_BRIGHTEN: "bright",
     CMD_CLIMATE_FAN_SETTING: "fan_state",
@@ -407,11 +409,13 @@
     FAMILY_ZMATTER_ZWAVE: "ZMatter_Z-Wave",
 }
 
-UOM_SECONDS = "57"
-UOM_FAN_MODES = "99"
 UOM_CLIMATE_MODES = "98"
 UOM_CLIMATE_MODES_ZWAVE = "67"
 UOM_DOUBLE_TEMP = "101"
+UOM_FAN_MODES = "99"
+UOM_INDEX = "25"
+UOM_PERCENTAGE = "51"
+UOM_SECONDS = "57"
 
 UOM_FRIENDLY_NAME = {
     "1": "A",
@@ -436,7 +440,7 @@
     "22": "%RH",
     "23": "inHg",
     "24": "in/hr",
-    "25": "index",
+    UOM_INDEX: "index",
     "26": "K",
     "27": "keyword",
     "28": "kg",
@@ -462,7 +466,7 @@
     "48": "MPH",
     "49": "m/s",
     "50": "Ω",
-    "51": "%",
+    UOM_PERCENTAGE: "%",
     "52": "lbs",
     "53": "pf",
     "54": "ppm",
@@ -984,3 +988,155 @@
 NODE_IS_NEW = 0x20  # brand new node
 NODE_TO_DELETE = 0x40  # has to be deleted later
 NODE_IS_DEVICE_ROOT = 0x80  # root device such as KPL load
+
+BACKLIGHT_SUPPORT = {
+    "DimmerMotorSwitch": UOM_PERCENTAGE,
+    "DimmerMotorSwitch_ADV": UOM_PERCENTAGE,
+    "DimmerLampSwitch": UOM_PERCENTAGE,
+    "DimmerLampSwitch_ADV": UOM_PERCENTAGE,
+    "DimmerSwitchOnly": UOM_PERCENTAGE,
+    "DimmerSwitchOnly_ADV": UOM_PERCENTAGE,
+    "KeypadDimmer": UOM_INDEX,
+    "KeypadDimmer_ADV": UOM_INDEX,
+    "RelayLampSwitch": UOM_PERCENTAGE,
+    "RelayLampSwitch_ADV": UOM_PERCENTAGE,
+    "RelaySwitchOnlyPlusQuery": UOM_PERCENTAGE,
+    "RelaySwitchOnlyPlusQuery_ADV": UOM_PERCENTAGE,
+    "RelaySwitchOnly": UOM_PERCENTAGE,
+    "RelaySwitchOnly_ADV": UOM_PERCENTAGE,
+    "KeypadRelay": UOM_INDEX,
+    "KeypadRelay_ADV": UOM_INDEX,
+    "KeypadButton": UOM_INDEX,
+    "KeypadButton_ADV": UOM_INDEX,
+}
+
+BACKLIGHT_INDEX = [
+    "On  0 / Off 0",
+    "On  1 / Off 0",
+    "On  2 / Off 0",
+    "On  3 / Off 0",
+    "On  4 / Off 0",
+    "On  5 / Off 0",
+    "On  6 / Off 0",
+    "On  7 / Off 0",
+    "On  8 / Off 0",
+    "On  9 / Off 0",
+    "On 10 / Off 0",
+    "On 11 / Off 0",
+    "On 12 / Off 0",
+    "On 13 / Off 0",
+    "On 14 / Off 0",
+    "On 15 / Off 0",
+    "On  0 / Off 1",
+    "On  1 / Off 1",
+    "On  2 / Off 1",
+    "On  3 / Off 1",
+    "On  4 / Off 1",
+    "On  5 / Off 1",
+    "On  6 / Off 1",
+    "On  7 / Off 1",
+    "On  8 / Off 1",
+    "On  9 / Off 1",
+    "On 10 / Off 1",
+    "On 11 / Off 1",
+    "On 12 / Off 1",
+    "On 13 / Off 1",
+    "On 14 / Off 1",
+    "On 15 / Off 1",
+    "On  0 / Off 2",
+    "On  1 / Off 2",
+    "On  2 / Off 2",
+    "On  3 / Off 2",
+    "On  4 / Off 2",
+    "On  5 / Off 2",
+    "On  6 / Off 2",
+    "On  7 / Off 2",
+    "On  8 / Off 2",
+    "On  9 / Off 2",
+    "On 10 / Off 2",
+    "On 11 / Off 2",
+    "On 12 / Off 2",
+    "On 13 / Off 2",
+    "On 14 / Off 2",
+    "On 15 / Off 2",
+    "On  0 / Off 3",
+    "On  1 / Off 3",
+    "On  2 / Off 3",
+    "On  3 / Off 3",
+    "On  4 / Off 3",
+    "On  5 / Off 3",
+    "On  6 / Off 3",
+    "On  7 / Off 3",
+    "On  8 / Off 3",
+    "On  9 / Off 3",
+    "On 10 / Off 3",
+    "On 11 / Off 3",
+    "On 12 / Off 3",
+    "On 13 / Off 3",
+    "On 14 / Off 3",
+    "On 15 / Off 3",
+    "On  0 / Off 4",
+    "On  1 / Off 4",
+    "On  2 / Off 4",
+    "On  3 / Off 4",
+    "On  4 / Off 4",
+    "On  5 / Off 4",
+    "On  6 / Off 4",
+    "On  7 / Off 4",
+    "On  8 / Off 4",
+    "On  9 / Off 4",
+    "On 10 / Off 4",
+    "On 11 / Off 4",
+    "On 12 / Off 4",
+    "On 13 / Off 4",
+    "On 14 / Off 4",
+    "On 15 / Off 4",
+    "On  0 / Off 5",
+    "On  1 / Off 5",
+    "On  2 / Off 5",
+    "On  3 / Off 5",
+    "On  4 / Off 5",
+    "On  5 / Off 5",
+    "On  6 / Off 5",
+    "On  7 / Off 5",
+    "On  8 / Off 5",
+    "On  9 / Off 5",
+    "On 10 / Off 5",
+    "On 11 / Off 5",
+    "On 12 / Off 5",
+    "On 13 / Off 5",
+    "On 14 / Off 5",
+    "On 15 / Off 5",
+    "On  0 / Off 6",
+    "On  1 / Off 6",
+    "On  2 / Off 6",
+    "On  3 / Off 6",
+    "On  4 / Off 6",
+    "On  5 / Off 6",
+    "On  6 / Off 6",
+    "On  7 / Off 6",
+    "On  8 / Off 6",
+    "On  9 / Off 6",
+    "On 10 / Off 6",
+    "On 11 / Off 6",
+    "On 12 / Off 6",
+    "On 13 / Off 6",
+    "On 14 / Off 6",
+    "On 15 / Off 6",
+    "On  0 / Off 7",
+    "On  1 / Off 7",
+    "On  2 / Off 7",
+    "On  3 / Off 7",
+    "On  4 / Off 7",
+    "On  5 / Off 7",
+    "On  6 / Off 7",
+    "On  7 / Off 7",
+    "On  8 / Off 7",
+    "On  9 / Off 7",
+    "On 10 / Off 7",
+    "On 11 / Off 7",
+    "On 12 / Off 7",
+    "On 13 / Off 7",
+    "On 14 / Off 7",
+    "On 15 / Off 7",
+]
diff --git a/pyisy/nodes/node.py b/pyisy/nodes/node.py
index 4af75aa..5c99dd1 100755
--- a/pyisy/nodes/node.py
+++ b/pyisy/nodes/node.py
@@ -4,6 +4,7 @@
 from xml.dom import minidom
 
 from ..constants import (
+    BACKLIGHT_SUPPORT,
     CLIMATE_SETPOINT_MIN_GAP,
     CMD_CLIMATE_FAN_SETTING,
     CMD_CLIMATE_MODE,
@@ -156,7 +157,16 @@ def is_battery_node(self):
         return self._is_battery_node
 
     @property
-    def is_dimmable(self):
+    def is_backlight_supported(self) -> bool:
+        """Confirm if this node supports setting backlight."""
+        return (
+            (self.protocol == PROTO_INSTEON)
+            and self.node_def_id is not None
+            and (self.node_def_id in BACKLIGHT_SUPPORT)
+        )
+
+    @property
+    def is_dimmable(self) -> bool:
         """
         Return the best guess if this is a dimmable node.