What type of bulb to use for the OREGON SCIENTIFIC WS902 alarm clock?

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The OREGON SCIENTIFIC WS902 alarm clock with sunrise simulation uses 60-watt incandescent bulbs. These bulbs are replaceable and allow for the gradual lighting (max brightness 300 lux) characteristic of the sunrise function (sunrise simulation).

Replacement procedure: First, unplug the device from the wall outlet and let it cool for about 15 minutes, as the cover may be very hot. Turn the unit to see the back of the product, with the UNLOCK COVER button facing you. Press and hold this button with your left thumb, then with your right hand, push the side of the cover (area above the button and hook) and lift to remove it. Gently unscrew the old bulb, then screw in the new one, making sure it is properly seated. To close, hold the cover with the top part slightly tilted outward, align the two plastic notches at the front with the designated space, then insert the cover until it clicks into place.

Important safety points: The device has a built-in thermal protection that automatically turns it off if the temperature inside the cover becomes too high. Always respect the 15-minute cooling time before handling. Only use 60 W bulbs that comply with the original specifications. If the bulb remains defective after replacement or if the device frequently shuts off for thermal reasons, check that the vents are not blocked and that the device has adequate ventilation (at least 40 cm of space above, 15 cm away from walls).

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