Q: Can I use the WAVE button to control the screen brightness when the device is plugged in and the projection is on?

Yes, it is entirely possible. The WAVE button only controls the brightness of the LCD screen and operates independently of the projection. When the device is plugged into the mains and the projection is on , you can press the WAVE button to change the lighting of the LCD display to: High brightness Low brightness No brightness (lighting off) The projection remains active regardless of this adjustment. If you want to completely stop the projection, use the projection switch located at the back of the device by toggling it to OFF.

Question 1

Why doesn't the WT 536 have a practical function to quickly turn on the screen in AC mode?

Accepted Answer

This is an excellent observation. The TECHNOLINE WT 536 indeed has a deliberate asymmetry between its two operating modes:

In battery mode: the SNOOZE/LIGHT button activates the backlight for 8 seconds, allowing you to quickly check the time and temperature without major disruption.
In AC mode (AC adapter): only the WAVE button manages the lighting, toggling between three states (high brightness, low brightness, light off). There is no automatic temporary activation.

This limitation is due to the design choices made by the manufacturer TECHNOLINE. The AC mode favors manual control of the three levels rather than a "quick on" function. It is indeed less convenient than some competitors (Oregon Scientific, etc.) that offer a temporary function in AC mode.

If you find this absence bothersome, you can contact TECHNOLINE support to provide this feedback - manufacturers often listen to requests regarding improved features compared to direct competitors.

Question 2

Can I use the WAVE button to control the screen brightness when the device is plugged in and the projection is on?

Accepted Answer

Yes, it is entirely possible. The WAVE button only controls the brightness of the LCD screen and operates independently of the projection.

When the device is plugged into the mains and the projection is on, you can press the WAVE button to change the lighting of the LCD display to:

High brightness
Low brightness
No brightness (lighting off)

The projection remains active regardless of this adjustment. If you want to completely stop the projection, use the projection switch located at the back of the device by toggling it to OFF.

Question 3

How to turn the display of the WT 536 back on after turning it off with the WAVE button?

Accepted Answer

When you use the WAVE button to turn off the display in AC mode (device plugged in), here’s how to turn it back on:

Press the WAVE button again to cycle through the brightness levels. The device offers three states: high brightness, low brightness, and display off. Press once or twice to return to a lit mode.

Note on the buttons: WAVE vs SNOOZE/LIGHT

Do not confuse the two:

WAVE: Pressable button to cycle brightness in AC mode (mains power). Allows switching between three levels: high, low, or off.
SNOOZE/LIGHT: Upper touch sensor that works only in battery mode. It temporarily activates the display for only 8 seconds.

In AC mode (device plugged into the outlet), you should use WAVE to turn the display back on, not SNOOZE/LIGHT. The latter only works when the device is running on batteries.

Question 4

Is it possible to see the temperature on the projection screen of the WT 536?

Accepted Answer

No, the projection screen of the WT 536 only displays the time. The light projection on the ceiling/wall (visibility up to 1-2 meters) is exclusively dedicated to displaying the time in 12/24h format.

The temperature is only displayed on the main backlit LCD screen of the device, with a measurement range of -9.9°C to 49.9°C (accuracy ±1°C between 0-40°C). You can switch the display between °C and °F by pressing the “ - ” button once.

There is no option to display the temperature alternately on the projection. If you want to check the temperature at night, use the backlight of the LCD screen via the SNOOZE/LIGHT button.

Question 5

How to disable the display lighting of the TECHNOLINE WT 536?

Accepted Answer

The management of the display lighting of the TECHNOLINE WT 536 depends on the power mode of your device.

In mains adapter mode: press the WAVE button (located at the back of the device) to toggle between three levels: high brightness, low brightness, or brightness off. Continue to press WAVE until you achieve the display without backlighting.

In battery mode: the backlighting works differently. Pressing the SNOOZE/LIGHT button (located on the top of the device) activates the backlighting and projection for 8 seconds only. There is no setting to completely disable the lighting in battery mode, as this function is designed for temporary illumination on demand.

If you are using the device on mains power and want to turn off the backlighting permanently, simply access the settings via the WAVE button until you select the option with no brightness. The LCD display will remain visible in most ambient lighting conditions.

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