Control Hatch Baby Rest devices using Bluetooth LE
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Hatch Baby Rest BLE API (.NET)

This .NET API allows programmatic control over the basic functions of the Hatch Baby Rest Smart Night Light, Sound Machine and OK-to-Wake, including control of Power, Color, Volume and Audio Track.


  • .NET Framework v4.6.1+
  • Windows 10 Creators Update (OS Version 15063 or later) - to support non-pairing Bluetooth LE communication
  • Windows 10 Compatible Bluetooth LE hardware (tested on Intel Dual Band Wireless-AC 7260 with integrated Bluetooth)


Install-Package m4rcus.HatchBaby.Rest


Examples in C#:

using m4rcus.HatchBaby.Rest;

Discovering devices

foreach (var rest in RestDevice.Discover().Result)
    using (rest) // dispose of the device when done with "using" or .Dispose()
        // save rest.Name and rest.BluetoothAddress
        // for later use
        await rest.SetPower(true);
        await rest.SetVolume(60);
        await rest.SetAudioTrack(AudioTrack.TRACK_STREAM);

Using devices via saved bluetooth address

// connect directly without discovery if address is known, ex "CBBABE52631F"
var bluetoothAddress = ulong.Parse("CBBABE52631F", System.Globalization.NumberStyles.HexNumber);
using (var rest = new RestDevice("MyHatchRest", bluetoothAddress))
    await rest.SetColor(Colors.Red);
    await Task.Delay(5000);
    await rest.SetPower(false);

Viewing debug output on console

static void Main(string[] args)
    // output debugging info to console
    Trace.Listeners.Add(new ConsoleTraceListener());

See the sample console app for more examples.


This library currently supports Power, Color, Volume and Audio Track. For other functionality (events, time), PRs are welcome!