diff --git a/src/telemetry.c b/src/telemetry.c
index 1ab9cabd37..39c251539d 100644
--- a/src/telemetry.c
+++ b/src/telemetry.c
@@ -45,6 +45,8 @@
 #define ID_GYRO_Y             0x41
 #define ID_GYRO_Z             0x42
 
+#define ID_VERT_SPEED         0x30 //opentx vario
+
 // from sensors.c
 extern uint8_t batteryCellCount;
 
@@ -135,6 +137,16 @@ static void sendGPS(void)
     serialize16(GPS_coord[LON] < 0 ? 'W' : 'E');
 }
 
+/*
+ * Send vertical speed for opentx. ID_VERT_SPEED
+ * Unit is cm/s
+ */
+static void sendVario(void)
+{
+    sendDataHead(ID_VERT_SPEED);
+    serialize16(vario);
+}
+
 /*
  * Send voltage via ID_VOLT
  *
@@ -246,6 +258,7 @@ void sendTelemetry(void)
 
         // Sent every 125ms
         sendAccel();
+        sendVario();
         sendTelemetryTail();
 
         if ((cycleNum % 4) == 0) {      // Sent every 500ms