Technoline WT 539 digital alarm clock

The TechnoLine WT 539 is a compact black digital alarm clock with an integrated projection function that displays time, date and temperature on walls or ceilings. Its simple rectangular housing and clear numeric display make it suitable for bedside use. The unit is powered by AA (Mignon LR06) batteries and is sized to fit small nightstands, with dimensions of 160 mm width, 72 mm height and 48 mm depth.

Advantages

The WT 539 provides a projection feature that allows convenient viewing of time, date and ambient temperature without turning toward the clock. Its compact footprint and lightweight construction make it easy to reposition or pack for travel. The black finish and straightforward display ensure readability in low light, while battery operation removes the need for a nearby power outlet.

Suitable for

• Bedroom nightstands where projected time is useful
• Guest rooms and small apartments
• Portable use when mains power is not available
• Users who prefer simple, no-frills digital alarm clocks

Key specifications

• Display: digital numeric display with projection
• Functions: alarm, projection of time, date and temperature
• Power supply: AA (Mignon LR06) batteries
• Dimensions: 160 mm (W) × 72 mm (H) × 48 mm (D)
• Color: black

How to use

Insert the required AA batteries into the battery compartment following the polarity markings. Set the current time using the dedicated time-setting buttons and configure the alarm time according to the instruction labels on the control panel. Activate the projection function with the projection control; adjust the projection angle by rotating or tilting the clock body to aim the projected image at the desired surface. The temperature display updates based on the built-in sensor.

Recommendations

Place the clock on a stable, level surface facing the area where you want the projection to appear. For a clear projection, dim or switch off room lights and aim the projector at a flat, light-colored surface. Replace batteries promptly when the display dims or projection weakens. Avoid exposing the unit to moisture or extreme temperatures to preserve accuracy and longevity.