Yes: set two times once and the display follows them every day. The player's daily on and off times blank the screen outside trading hours, HDMI-CEC stands the display down over the HDMI cable, and a rated outlet timer cuts the power outright. This article sets up all three, checks them over two days, and works a 7:00 am to 9:00 pm example that saves 146 kWh a year on a 40 W display.
A display that plays a loop in a shop needs exactly two times a day: one to start the show at open and one to stop it after close. You can set both once and let the schedule repeat on its own. Three methods get you there, and they differ in what actually switches off. The player's daily on and off times blank the screen and leave the power connected. HDMI-CEC lets the player stand the display down over the HDMI cable, backlight included. A rated outlet timer or smart plug cuts the mains so the whole unit stops. This article sets up each method, checks it across two trading days, and works the numbers for a store open from 7:00 am to 9:00 pm.
Can a retail display turn itself on at open and off at close every day?
Yes: every common method comes down to two stored times and one decision about what switches off. The example through this article gives a 32-inch display 14 hours of show a day and hands the dark hours to a timer.
The times live in one of three places. Inside the player, which blanks the screen on schedule. Inside the display, which obeys wake and standby commands over HDMI-CEC or starts when mains arrives. Or in the outlet, where a timer governs the power itself. Before you buy anything, open the display's own menu: many consumer displays carry a built-in on and off timer. If yours has one, the whole job may already be done with no extra hardware at all.
Which scheduling method fits your setup?
Pick the player's daily schedule when a dark screen is enough, a switched outlet when the display must lose power, and HDMI-CEC when both devices support it; most single-screen shops need only the first.
| Method | What switches off | Extra hardware | Fits when |
|---|---|---|---|
| Player daily on and off times | Screen goes black at minimum brightness; power stays on | None | A dark screen is enough |
| Switched outlet timer or smart plug | Mains off: display and player both stop | Timer rated above the load | You want real power off overnight |
| HDMI-CEC | Screen wakes and stands by on command | None, if CEC is supported and enabled | The player can send CEC and the display accepts it |
On our small retail displays the player and screen come as one unit, the show plays from a card with no network and no subscription, and the schedule is built in. If you run a generic player with a cloud CMS instead, the CMS scheduler sets the same two times from its dashboard; the free digital signage software article sorts those options.
Recommendation: For one screen on the shop's own hours, set the player's daily on and off times first and watch one full week; add an outlet timer rated above the load when you want the whole unit dead overnight, and build on HDMI-CEC only after both devices have shown they support it.
What do you need before you set the times?
You need the display and player running the loop, the two times written down, and for the outlet method a timer or smart plug whose rating covers the load; the loop content itself comes off a card and needs no network.
- The display and the player running the loop, with the content loaded where the player reads it: a card or USB stick on an offline player, the CMS library on a networked one. The digital signage player guide covers that choice if it is still open.
- The two times on paper: on at 7:00 am, off at 9:00 pm in the example.
- For the outlet method, a mechanical dial timer or a smart plug whose printed rating sits above the display and player watts added together.
- For HDMI-CEC, CEC support switched on at both ends of the HDMI cable.
How do you set the daily on and off times in the player?
Set the daily on time and the daily off time in the player's settings screen, then save and power-cycle once; in the worked example that is 7:00 am on and 9:00 pm off, one pair of times that repeats every day.
- Write the two times down first and tape the note inside the cabinet; the schedule is only as good as the values you entered.
- Open the player's settings screen and find the daily on time and daily off time settings.
- Enter 7:00 am as the on time and 9:00 pm as the off time, and save.
- Power the unit off and on once, reopen the settings, and check the times are still there.
- Leave the unit powered. From the off time the screen shows black at minimum brightness, because the app cannot switch the backlight off; at the on time the loop returns on its own.
How do you schedule power at the outlet instead?
Put the display and player on one timer or smart plug, cut the power at the closing time and let it return at the opening time; the display must be set to start when mains arrives, and the player comes up with it.
- Add the rated watts of the display and the player, and pick a timer or smart plug whose printed rating is above that total.
- Plug both devices into the timer and the timer into the wall. One safety note: keep the total watts inside the timer's printed rating and plug the devices into the timer itself, not into adapters chained behind it.
- Program the timer to cut power at 9:00 pm and return it at 7:00 am. A weekly timer takes different hours on different days.
- In the display's own menu, set its power-on behavior so it starts when mains arrives; makers name that setting differently, so look near the power or system options. If the display has no such setting, the outlet method leaves you pressing its button each morning, so settle this before you buy the timer.
- On the player side there is nothing to schedule: set up as the home app and the show comes up full screen at power-on, with no launcher in the way.
Where the player is a separate low-voltage unit fed from a DC adapter, the 12 to 36 V DC wiring guide covers the adapter side of that chain.
When does HDMI-CEC switch the actual screen off?
HDMI-CEC lets the player tell the display to wake and stand by over the HDMI cable, so the backlight genuinely switches off at the closing time while the power stays connected; both devices must support CEC and have it enabled, so check that first.
CEC is part of the HDMI standard: a source device can send wake and standby commands down the HDMI cable, and a display with CEC enabled acts on them. Set the player's daily times once, as in the steps above, and the schedule drives the screen without anything else to buy. Two things to check before you rely on it. Support is optional in the HDMI standard, so a given player or display may lack it, and each maker buries the setting under a different name in the display's menu; the HDMI-CEC signage display control article walks through where it hides. Our own catalog lists the HDMI port as an output and does not list CEC, so ask for CEC support in the quote before you build the schedule around it.
What happens outside the hours you set?
With the player's schedule the screen goes black at minimum brightness, because the app cannot switch the backlight off, so the unit keeps drawing power until a timer or a CEC standby removes the supply; the off time you set decides which of those happens.
The three methods leave three different after-hours states. The player's schedule leaves the unit powered and the panel dark; pair it with the outlet timer when the after-hours draw matters. The outlet method leaves nothing running, and the morning picture waits for the boot, so return power about 5 minutes before open and the first customer never sees a boot screen. CEC leaves the player running and the panel in standby, the middle state of the three. During trading hours none of this needs a network on an offline player, and the offline schedule caching article covers how long an unattended player keeps its show going on its own.
How do you check the schedule worked?
Watch the two transitions and one cold start before you trust the schedule: the show appearing at 7:00 am untouched, the screen dark at 9:00 pm, and a boot after the overnight power cut, because a timer that works on the bench still has to survive a real outage.
- On transition: stand at the screen at the on time. The loop must appear with no input from anyone.
- Off transition: at the off time the screen goes black on the player and CEC methods, and the whole unit goes dead on the outlet method.
- Cold start: after the overnight cut, the display must start itself and the show must return. If it stops on a launcher or a settings screen instead, set the player as the home app.
- Timer memory: after a power cut the player is designed to start again within seconds and go back to playing, but the on and off times are stored settings, so reopen the player settings, check they held, and re-enter whatever is gone. Re-check a digital timer's program too if its backup battery is flat.
- A network-free day: on an offline player, unplug the network for one trading day; the loop carries on from the card.
What does a 7:00 am to 9:00 pm example save over a year?
A 32-inch display drawing about 40 W, the middle of the 30 to 60 W range that 32-inch spec sheets list, uses 0.96 kWh across a full day but only 0.56 kWh across the 14 scheduled hours, which saves 146 kWh a year.
The scenario: a shoe shop opens at 7:00 am and closes at 9:00 pm, 14 hours of show and 10 hours dark, and the panel draws about 40 W while playing.
- Left running across the whole day: 40 W × 24 h = 960 Wh = 0.96 kWh a day.
- Scheduled hours only: 40 W × 14 h = 560 Wh = 0.56 kWh a day.
- Saved: 0.96 kWh - 0.56 kWh = 0.40 kWh a day, and 0.40 kWh × 365 days = 146 kWh a year.
The 40 W sits mid-range; a 60 W panel on the same hours saves 60 W × 10 h × 365 = 219 kWh a year, and a 30 W panel saves 110 kWh. So the decision by method: the player's schedule removes the dark-hours picture but leaves the unit powered; the rated outlet timer removes all of it and costs one timer; CEC lands in between, panel off, player on.
Questions
Can the screen show different content at different times of day?
The player in our panel-mount units has no dayparting: it runs one playlist, and only the daily on and off times change what the screen shows. Different playlists by hour, day or season need a CMS that schedules content, a cloud service or your own server. A customer may install such an app in place of the card-based setup.
Does the schedule survive a power cut?
The two times live in the player's settings, and the outlet schedule lives in the timer. After an outage, reopen the player settings and check the times are still set, and re-enter them if they are gone. A mechanical dial timer keeps its schedule through an outage; a digital timer holds its program only while its backup battery is good, so re-check it after a long cut.
When should the on time be if staff arrive before the doors open?
Set the on time to the first customer, or earlier if the screen also serves staff at the counter; set the off time at close. Two extra showing hours a day on a 40 W display add about 29 kWh a year, 40 W × 2 h × 365 = 29.2 kWh, which is why the times are worth deciding before the installer asks.
Planning information, not legal or engineering advice. Rules differ by place: check codes and permits with your local authority and your licensed trades.