Monitors into sleep mode and out of sleep mode with and app

Question

I work in a factory and we have several monitors attached to PC's throughout the shop that stay "ON" 24/7/365.

I want to be able to send the monitors into sleep mode or awaken them from sleep mode from my computer.

How can I accomplish this task easily?

Thanks in advance.

score 0 · Answer 1 · answered Jul 24 '23 at 13:11

Natively a monitor does not have any external brains, so will not receive external commands.

Either leave it on, or set it to go black after the longest time interval.

Consider a smart power bar (out of scope for this forum) that can be turned on and off remotely. Connect the monitor to this smart power bar.

score 0 · Answer 2 · answered Jul 24 '23 at 13:28

You may use psexec to send commands to the computers to turn off the monitor.

This will require writing a batch script that will cycle through a text list of the computers and send a command to turn off their monitors.

See the article Turn Off Monitor Using Shortcut or Command-line in Windows for various methods and utilities for turning off the monitor. Perhaps the simplest method is to use this PowerShell command:

powershell (Add-Type '[DllImport("user32.dll")]public static extern int SendMessage(int hWnd, int hMsg, int wParam, int lParam);' -Name a -Pas)::SendMessage(-1,0x0112,0xF170,2)

Note that any user activity on a compute whose monitor is turned off will automatically turn the monitor back on.

I want to be able to turn the monitor to sleep mode or awaken it from sleep mode. — Kevin, Jul 24 '23 at 14:46
(1) To awaken from sleep, change the last parameter in the command from `2` to `-1`. (2) The utilities described in the article also all have parameters to undo the sleep. — harrymc, Jul 24 '23 at 14:51