XWPR_Histogram_Vol_Direct indicator provides alerts, sends email and push notifications of the incoming trading signals.
Possible signal options:

• Zero breakthrough by the histogram;
• Changing the histogram movement direction;
• Overbought or oversold levels breakthrough;
• Exiting overbought or oversold areas.

Input parameters for activating signals:

input uint NumberofBar=1;          // Number of a bar for delivering a signal
input bool SoundON=true;           // Allow the alert
input uint NumberofAlerts=2;       // Number of alerts
input bool EMailON=false;          // Allow sending signals by email
input bool PushON=false;           // Allow sending signals to a mobile device

The indicator uses SmoothAlgorithms.mqh library classes

(copy it to <terminal_data_folder>\MQL5\Include).

The use of the classes was thoroughly described in the article “Averaging Price Series for Intermediate Calculations Without Using Additional Buffers”.