/// <summary>
        /// Connect to pushbullet and make a send request
        /// </summary>
        private string PushBulletHttpRequest(string requestUrl, string accessToken, RequestType HttpRequestType, string pushBulletObject)
        {
            HttpsClient client = new HttpsClient();

            client.PeerVerification = false;
            client.HostVerification = false;
            client.Verbose          = false;

            HttpsClientRequest  httpRequest = new HttpsClientRequest();
            HttpsClientResponse response;

            try
            {
                httpRequest.KeepAlive = true;
                httpRequest.Url.Parse(requestUrl);
                httpRequest.RequestType = HttpRequestType;
                httpRequest.Header.SetHeaderValue("Content-Type", "application/json");
                httpRequest.Header.SetHeaderValue("Access-Token", accessToken);
                httpRequest.ContentString = pushBulletObject;

                response = client.Dispatch(httpRequest);

                if (response.Code >= 200 && response.Code < 300)
                {
                    // sucess
                    return(response.ContentString);
                }
                else if (response.Code == 401 | response.Code == 403)
                {
                    ErrorLog.Error("PushBullet Invalid Access Token");
                    OnDoorLockMessageReceived("PushBullet Invalid Access Token");
                    return("Error");
                }
                else
                {
                    // error responce
                    ErrorLog.Error(response.ContentString.ToString());
                    return("Error");
                }
            }
            catch (Exception e)
            {
                ErrorLog.Error("PushBulletHttpRequest Error: " + e.Message);
                return("Error");
            }
            finally
            {
                client.Dispose();
            }
        }