diff --git a/tools/chatgui-android/router-tests/build.gradle.kts b/tools/chatgui-android/router-tests/build.gradle.kts
index 781cd94b..f45b51b5 100644
--- a/tools/chatgui-android/router-tests/build.gradle.kts
+++ b/tools/chatgui-android/router-tests/build.gradle.kts
@@ -9,6 +9,7 @@ kotlin {
         kotlin.srcDir(providers.gradleProperty("routerSourceDir").getOrElse("../app/src/main/java"))
         kotlin.include("android/**", "com/utun/chat/RouterHostApp.kt", "com/utun/chat/data/RouterHostEnvironment.kt",
             "com/utun/chat/data/CallAudioRouter.kt", "com/utun/chat/data/CoreActivity.kt",
+            "com/utun/chat/data/ProximityManager.kt",
             "com/utun/chat/data/NetworkActivityMonitor.kt", "com/utun/chat/data/NetworkChangeMonitor.kt")
     }
 }
diff --git a/tools/chatgui-android/router-tests/src/main/kotlin/android/content/Context.kt b/tools/chatgui-android/router-tests/src/main/kotlin/android/content/Context.kt
index c072f9a1..442b192f 100644
--- a/tools/chatgui-android/router-tests/src/main/kotlin/android/content/Context.kt
+++ b/tools/chatgui-android/router-tests/src/main/kotlin/android/content/Context.kt
@@ -2,22 +2,28 @@ package android.content
 
 import android.media.AudioManager
 import android.net.ConnectivityManager
+import android.hardware.SensorManager
 import com.utun.chat.data.HostConfigProvider
 
-/** Только host-тест: управляемые AudioManager/ConnectivityManager, без устройств/разрешений ОС. */
+/** Только host-тест: управляемые Android managers, без устройств/разрешений ОС. */
 class Context {
-    companion object { const val AUDIO_SERVICE = "audio" }
+    companion object { const val AUDIO_SERVICE = "audio"; const val SENSOR_SERVICE = "sensor" }
     var permissionGranted = true
     var connectivityManager: ConnectivityManager? = ConnectivityManager()
+    var sensorManager: SensorManager? = SensorManager()
     val configProvider = HostConfigProvider()
     val applicationContext: Context get() = this
-    fun getSystemService(name: String): Any {
-        check(name == AUDIO_SERVICE)
-        return AudioManager.shared
+    fun getSystemService(name: String): Any? = when (name) {
+        AUDIO_SERVICE -> AudioManager.shared
+        SENSOR_SERVICE -> sensorManager
+        else -> error("Unknown service: $name")
     }
     fun <T> getSystemService(type: Class<T>): T? {
-        check(type == ConnectivityManager::class.java)
-        return type.cast(connectivityManager)
+        return type.cast(when (type) {
+            ConnectivityManager::class.java -> connectivityManager
+            SensorManager::class.java -> sensorManager
+            else -> error("Unknown service: $type")
+        })
     }
     fun checkSelfPermission(name: String): Int = if (permissionGranted) 0 else -1
 }
diff --git a/tools/chatgui-android/router-tests/src/main/kotlin/android/hardware/HostSensors.kt b/tools/chatgui-android/router-tests/src/main/kotlin/android/hardware/HostSensors.kt
new file mode 100644
index 00000000..abcc7b8a
--- /dev/null
+++ b/tools/chatgui-android/router-tests/src/main/kotlin/android/hardware/HostSensors.kt
@@ -0,0 +1,50 @@
+package android.hardware
+
+import android.os.Handler
+import android.os.Looper
+
+/** Только host-тест: очередь датчика, результаты регистрации и ошибки ОС задаёт тест. */
+class Sensor(val maximumRange: Float = 5f) { companion object { const val TYPE_PROXIMITY = 8 } }
+class SensorEvent(val sensor: Sensor, val values: FloatArray)
+interface SensorEventListener {
+    fun onSensorChanged(event: SensorEvent)
+    fun onAccuracyChanged(sensor: Sensor?, accuracy: Int)
+}
+
+class SensorManager {
+    companion object { const val SENSOR_DELAY_NORMAL = 3 }
+    data class Registration(val listener: SensorEventListener, val sensor: Sensor, val handler: Handler)
+    var sensor: Sensor? = Sensor()
+    var acceptRegistration = true
+    var failRegistration = false
+    var failRemoval = false
+    var registerAttempts = 0
+    var removeAttempts = 0
+    val registrations = mutableListOf<Registration>()
+    val active = mutableSetOf<SensorEventListener>()
+
+    fun getDefaultSensor(type: Int): Sensor? { check(type == Sensor.TYPE_PROXIMITY); return sensor }
+    fun registerListener(listener: SensorEventListener, sensor: Sensor, delay: Int,
+        handler: Handler = Handler(Looper.getMainLooper())): Boolean {
+        check(delay == SENSOR_DELAY_NORMAL)
+        registerAttempts++
+        registrations.add(Registration(listener, sensor, handler))
+        check(!failRegistration) { "sensor registration unavailable" }
+        if (!acceptRegistration) return false
+        active.add(listener)
+        return true
+    }
+    fun unregisterListener(listener: SensorEventListener) {
+        removeAttempts++
+        check(!failRemoval) { "sensor removal unavailable" }
+        active.remove(listener)
+    }
+
+    /** Можно доставить и старую регистрацию: модель события, уже переданного ОС в очередь приложения. */
+    fun deliver(index: Int, distance: Float) {
+        val registration = registrations[index]
+        registration.handler.post {
+            registration.listener.onSensorChanged(SensorEvent(registration.sensor, floatArrayOf(distance)))
+        }
+    }
+}