diff --git a/.idea/deploymentTargetDropDown.xml b/.idea/deploymentTargetDropDown.xml
new file mode 100644
index 0000000..885c2b3
--- /dev/null
+++ b/.idea/deploymentTargetDropDown.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="deploymentTargetDropDown">
+    <runningDeviceTargetSelectedWithDropDown>
+      <Target>
+        <type value="RUNNING_DEVICE_TARGET" />
+        <deviceKey>
+          <Key>
+            <type value="SERIAL_NUMBER" />
+            <value value="3d29e5a6" />
+          </Key>
+        </deviceKey>
+      </Target>
+    </runningDeviceTargetSelectedWithDropDown>
+    <timeTargetWasSelectedWithDropDown value="2023-06-24T21:15:01.924740400Z" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 91ee7be..b0adb6d 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -16,8 +16,7 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.HeliBLE"
-        tools:targetApi="31">
+        android:theme="@style/Theme.HeliBLE">
         <activity
             android:name=".ControlActivity"
             android:exported="false" />
diff --git a/app/src/main/java/com/listerk/helible/BleDeviceAdapter.kt b/app/src/main/java/com/listerk/helible/BleDeviceAdapter.kt
index 15c301f..cd073bd 100644
--- a/app/src/main/java/com/listerk/helible/BleDeviceAdapter.kt
+++ b/app/src/main/java/com/listerk/helible/BleDeviceAdapter.kt
@@ -5,6 +5,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.Button
+import android.widget.ImageView
 import android.widget.TextView
 import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.recyclerview.widget.RecyclerView
@@ -24,7 +25,10 @@ class BleDeviceAdapter(private val devices: List<BleDevice>, private val gotoCon
     override fun onBindViewHolder(holder: BleDeviceViewHolder, position: Int) {
         holder.nameView.text = devices[position].name
         holder.addressView.text = devices[position].address
-        holder.rssiView.text = devices[position].rssi.toString()
+        if (devices[position].rssi >= -80) holder.rssiView.setImageResource(R.drawable.signal_icon4)
+        else if (devices[position].rssi >= -90) holder.rssiView.setImageResource(R.drawable.signal_icon3)
+        else if (devices[position].rssi >= -100) holder.rssiView.setImageResource(R.drawable.signal_icon2)
+        else holder.rssiView.setImageResource(R.drawable.signal_icon1)
         holder.cardView.isSelected = position == selectedPosition
         holder.cardView.setOnClickListener {
             AppState.bleDevice = devices[position]
@@ -40,6 +44,6 @@ class BleDeviceAdapter(private val devices: List<BleDevice>, private val gotoCon
         val cardView = itemView.rootView
         val nameView = itemView.findViewById<TextView>(R.id.deviceName)
         val addressView = itemView.findViewById<TextView>(R.id.deviceAddress)
-        val rssiView = itemView.findViewById<TextView>(R.id.deviceRssi)
+        val rssiView = itemView.findViewById<ImageView>(R.id.deviceRssi)
     }
 }
diff --git a/app/src/main/res/drawable/signal_icon1.xml b/app/src/main/res/drawable/signal_icon1.xml
new file mode 100644
index 0000000..4ff4532
--- /dev/null
+++ b/app/src/main/res/drawable/signal_icon1.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="24dp" android:height="24dp" android:viewportWidth="500" android:viewportHeight="500">
+    <path android:fillColor="?android:textColorPrimary" android:pathData="M 15 340 L 80 340 Q 95 340 95 355 L 95 485 Q 95 500 80 500 L 15 500 Q 0 500 0 485 L 0 355 Q 0 340 15 340 Z"/>
+</vector>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/signal_icon2.xml b/app/src/main/res/drawable/signal_icon2.xml
new file mode 100644
index 0000000..419d49a
--- /dev/null
+++ b/app/src/main/res/drawable/signal_icon2.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="500"
+    android:viewportHeight="500">
+
+    <path
+        android:fillColor="?android:textColorPrimary"
+        android:pathData="M 15 340 L 80 340 Q 95 340 95 355 L 95 485 Q 95 500 80 500 L 15 500 Q 0 500 0 485 L 0 355 Q 0 340 15 340 Z" />
+    <path
+        android:fillColor="?android:textColorPrimary"
+        android:pathData="M 150 220 L 215 220 Q 230 220 230 235 L 230 485 Q 230 500 215 500 L 150 500 Q 135 500 135 485 L 135 235 Q 135 220 150 220 Z" />
+</vector>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/signal_icon3.xml b/app/src/main/res/drawable/signal_icon3.xml
new file mode 100644
index 0000000..baa4222
--- /dev/null
+++ b/app/src/main/res/drawable/signal_icon3.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="500"
+    android:viewportHeight="500">
+
+    <path
+        android:fillColor="?android:textColorPrimary"
+        android:pathData="M 15 340 L 80 340 Q 95 340 95 355 L 95 485 Q 95 500 80 500 L 15 500 Q 0 500 0 485 L 0 355 Q 0 340 15 340 Z" />
+    <path
+        android:fillColor="?android:textColorPrimary"
+        android:pathData="M 150 220 L 215 220 Q 230 220 230 235 L 230 485 Q 230 500 215 500 L 150 500 Q 135 500 135 485 L 135 235 Q 135 220 150 220 Z" />
+    <path
+        android:fillColor="?android:textColorPrimary"
+        android:pathData="M 285 120 L 350 120 Q 365 120 365 135 L 365 485 Q 365 500 350 500 L 285 500 Q 270 500 270 485 L 270 135 Q 270 120 285 120 Z" />
+</vector>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/signal_icon4.xml b/app/src/main/res/drawable/signal_icon4.xml
new file mode 100644
index 0000000..03fc192
--- /dev/null
+++ b/app/src/main/res/drawable/signal_icon4.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="500"
+    android:viewportHeight="500">
+
+    <path
+        android:fillColor="?android:textColorPrimary"
+        android:pathData="M 15 340 L 80 340 Q 95 340 95 355 L 95 485 Q 95 500 80 500 L 15 500 Q 0 500 0 485 L 0 355 Q 0 340 15 340 Z" />
+    <path
+        android:fillColor="?android:textColorPrimary"
+        android:pathData="M 150 220 L 215 220 Q 230 220 230 235 L 230 485 Q 230 500 215 500 L 150 500 Q 135 500 135 485 L 135 235 Q 135 220 150 220 Z" />
+    <path
+        android:fillColor="?android:textColorPrimary"
+        android:pathData="M 285 120 L 350 120 Q 365 120 365 135 L 365 485 Q 365 500 350 500 L 285 500 Q 270 500 270 485 L 270 135 Q 270 120 285 120 Z" />
+    <path
+        android:fillColor="?android:textColorPrimary"
+        android:pathData="M 420 0 L 485 0 Q 500 0 500 15 L 500 485 Q 500 500 485 500 L 420 500 Q 405 500 405 485 L 405 15 Q 405 0 420 0 Z" />
+</vector>
\ No newline at end of file
diff --git a/app/src/main/res/layout/item_ble_device.xml b/app/src/main/res/layout/item_ble_device.xml
index 79491b7..a95fa54 100644
--- a/app/src/main/res/layout/item_ble_device.xml
+++ b/app/src/main/res/layout/item_ble_device.xml
@@ -28,14 +28,13 @@
         android:textSize="14sp"
         android:text="C3:7A:F4:6E:2F:D6" />
 
-    <TextView
+    <ImageView
         android:id="@+id/deviceRssi"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintBottom_toBottomOf="parent"
-        android:textSize="16sp"
-        android:text="-70" />
+        android:src="@drawable/signal_icon4" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file