diff --git a/app/src/main/java/org/koreader/launcher/TestActivity.kt b/app/src/main/java/org/koreader/launcher/TestActivity.kt
index b93b25d9d..fea9cfeb9 100644
--- a/app/src/main/java/org/koreader/launcher/TestActivity.kt
+++ b/app/src/main/java/org/koreader/launcher/TestActivity.kt
@@ -27,6 +27,7 @@ import org.koreader.launcher.device.lights.OnyxWarmthController
 import org.koreader.launcher.device.lights.TolinoRootController
 import org.koreader.launcher.device.lights.TolinoNtxController
 import org.koreader.launcher.device.lights.TolinoNtxNoWarmthController
+import org.koreader.launcher.device.lights.TolinoB300Controller
 import org.koreader.launcher.device.lights.BoyueS62RootController
 import org.koreader.launcher.dialog.LightDialog
 import org.koreader.launcher.dialog.ToolTip
@@ -81,6 +82,7 @@ class TestActivity: AppCompatActivity() {
         lightsMap["Tolino Root"] = TolinoRootController()
         lightsMap["Tolino Ntx"] = TolinoNtxController()
         lightsMap["Tolino Ntx (no warmth)"] = TolinoNtxNoWarmthController()
+        lightsMap["Tolino B300"] = TolinoB300Controller()
 
         // Device ID
         binding.info.append("Manufacturer: ${DeviceInfo.MANUFACTURER}\n")
diff --git a/app/src/main/java/org/koreader/launcher/device/LightsFactory.kt b/app/src/main/java/org/koreader/launcher/device/LightsFactory.kt
index 8614bd339..32d6bfe5d 100644
--- a/app/src/main/java/org/koreader/launcher/device/LightsFactory.kt
+++ b/app/src/main/java/org/koreader/launcher/device/LightsFactory.kt
@@ -106,6 +106,11 @@ object LightsFactory {
                     logController("TolinoRoot")
                     TolinoRootController()
                 }
+                DeviceInfo.Id.TOLINO_VISION6,
+                -> {
+                    logController("TolinoB300Controller")
+                    TolinoB300Controller()
+                }
                 else -> {
                     logController("Generic")
                     GenericController()
diff --git a/app/src/main/java/org/koreader/launcher/device/lights/TolinoB300Controller.kt b/app/src/main/java/org/koreader/launcher/device/lights/TolinoB300Controller.kt
new file mode 100644
index 000000000..8900feefb
--- /dev/null
+++ b/app/src/main/java/org/koreader/launcher/device/lights/TolinoB300Controller.kt
@@ -0,0 +1,129 @@
+package org.koreader.launcher.device.lights
+
+import android.app.Activity
+import android.provider.Settings
+import android.util.Log
+import org.koreader.launcher.device.Ioctl
+import org.koreader.launcher.device.LightsInterface
+
+// Light and warmth controller for B300 Tolino devices (Epos 3, Vision 6, Shine 4)
+// Need testers for Shine 4 and Epos 3, Vision 6 tested personally.
+// Vision 6 has inverted warmth.
+class TolinoB300Controller : Ioctl(), LightsInterface {
+
+    companion object {
+        private const val TAG = "Lights"
+        private const val BRIGHTNESS_MAX = 100
+        private const val WARMTH_MAX = 10
+        private const val MIN = 0
+        private const val SCREEN_BRIGHTNESS = "screen_brightness"
+        private const val SCREEN_BRIGHTNESS_COLOR = "screen_brightness_color"
+    }
+
+    override fun getPlatform(): String {
+        return "tolino"
+    }
+
+    override fun hasFallback(): Boolean {
+        return false
+    }
+
+    override fun hasWarmth(): Boolean {
+        return true
+    }
+
+    override fun needsPermission(): Boolean {
+        return true
+    }
+
+    override fun enableFrontlightSwitch(activity: Activity): Int {
+        return 1
+    }
+
+    override fun getBrightness(activity: Activity): Int {
+        return try {
+            Settings.System.getInt(activity.applicationContext.contentResolver, SCREEN_BRIGHTNESS)
+        } catch (e: Exception) {
+            Log.w(TAG, e.toString())
+            0
+        }
+    }
+
+    override fun getWarmth(activity: Activity): Int {
+        return try {
+            Settings.System.getInt(
+                    activity.applicationContext.contentResolver,
+                    SCREEN_BRIGHTNESS_COLOR
+            )
+        } catch (e: Exception) {
+            Log.w(TAG, e.toString())
+        }
+    }
+
+    override fun setBrightness(activity: Activity, brightness: Int) {
+        if (brightness < MIN || brightness > BRIGHTNESS_MAX) {
+            Log.w(TAG, "brightness value of of range: $brightness")
+            return
+        }
+        Log.v(TAG, "Setting brightness to $brightness")
+        try {
+            Settings.System.putInt(
+                    activity.applicationContext.contentResolver,
+                    SCREEN_BRIGHTNESS,
+                    brightness
+            )
+        } catch (e: Exception) {
+            Log.w(TAG, "$e")
+        }
+    }
+
+    override fun setWarmth(activity: Activity, warmth: Int) {
+        if (warmth < MIN || warmth > WARMTH_MAX) {
+            Log.w(TAG, "warmth value of of range: $warmth")
+            return
+        }
+        Log.v(TAG, "Setting warmth to $warmth")
+        try {
+            Settings.System.putInt(
+                    activity.applicationContext.contentResolver,
+                    SCREEN_BRIGHTNESS_COLOR,
+                    warmth
+            )
+
+            // crappy toggle brightness to force warmth refresh
+            val currentBrightness: Int = getBrightness(activity)
+            Settings.System.putInt(
+                    activity.applicationContext.contentResolver,
+                    SCREEN_BRIGHTNESS,
+                    currentBrightness + 1
+            )
+            Settings.System.putInt(
+                    activity.applicationContext.contentResolver,
+                    SCREEN_BRIGHTNESS,
+                    currentBrightness
+            )
+        } catch (e: Exception) {
+            Log.w(TAG, "$e")
+        }
+    }
+
+    override fun getMinWarmth(): Int {
+        return MIN
+    }
+
+    override fun getMaxWarmth(): Int {
+        return WARMTH_MAX
+    }
+
+    override fun getMinBrightness(): Int {
+        return MIN
+    }
+
+    override fun getMaxBrightness(): Int {
+        return BRIGHTNESS_MAX
+    }
+
+    override fun hasStandaloneWarmth(): Boolean {
+        return false
+    }
+}