<!--
{
  "availability" : [
    "macOS: 10.7.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "IOBluetooth",
  "identifier" : "/documentation/IOBluetooth/IOBluetoothDevice/rssi()",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "IOBluetooth"
    ],
    "preciseIdentifier" : "c:objc(cs)IOBluetoothDevice(im)RSSI"
  },
  "title" : "rssi()"
}
-->

# rssi()

Get the RSSI device (if connected), above or below the golden range. If the RSSI is within the golden range, a value of 0 is returned. For the actual RSSI value, use getRawRSSI. For more information, see the Bluetooth 4.0 Core Specification.

```
func rssi() -> BluetoothHCIRSSIValue
```

## Return Value

Returns the RSSI of the device. If the value cannot be read (e.g. the device is disconnected), a value of +127 will be returned.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)