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If the screen appears dark, try repositioning the Horizon 2 for the light sensor to work to the fullest. In some positions, the Horizon 2 cannot effectively detect the ambient light level in the room. 

On the bottom panel, rotate the battery cover into the unlocked position and remove the cover. Press the battery clip visible on the back side of the battery compartment to allow the existing battery to come out. Then insert the new battery in the slot with the + side visible (facing up), and install the battery cover again. Rotate the battery cover to lock it into place.

On backup battery power, please wait 50 seconds for the alarm to turn off automatically.

Once an alarm is set and starts to ring, it can be snoozed by tapping the large central knob/button on the top of the unit (circled in yellow in the image below). If this button is held for more than 2 seconds it will turn off the alarm.


The duration of the snooze cannot be changed and is fixed to 9 minutes. The alarm will continue to ring for 3 minutes and if not turned off or snoozed, it will automatically snooze after this time. It will automatically snooze for a maximum of 3 times, but if the snooze button is used before this occurs, the alarm can be snoozed an unlimited number of times.

Once snoozed, the display shows the time that the alarm will next ring.

To keep the radio playing after the alarm is turned off, press one of the 3 preset buttons or the DAB/FM button as desired.

If the screen appears dark, try repositioning the Horizon 2 for the light sensor to work to the fullest. In some positions, the Horizon 2 cannot effectively detect the ambient light level in the room. 

On the bottom panel, rotate the battery cover into the unlocked position and remove the cover. Press the battery clip visible on the back side of the battery compartment to allow the existing battery to come out. Then insert the new battery in the slot with the + side visible (facing up), and install the battery cover again. Rotate the battery cover to lock it into place.

On backup battery power, please wait 50 seconds for the alarm to turn off automatically.

Once an alarm is set and starts to ring, it can be snoozed by tapping the large central knob/button on the top of the unit (circled in yellow in the image below). If this button is held for more than 2 seconds it will turn off the alarm.


The duration of the snooze cannot be changed and is fixed to 9 minutes. The alarm will continue to ring for 3 minutes and if not turned off or snoozed, it will automatically snooze after this time. It will automatically snooze for a maximum of 3 times, but if the snooze button is used before this occurs, the alarm can be snoozed an unlimited number of times.

Once snoozed, the display shows the time that the alarm will next ring.

To keep the radio playing after the alarm is turned off, press one of the 3 preset buttons or the DAB/FM button as desired.

The lights cannot be adjusted by user. The digital front panel display has automatic light intensity adjustment, which follows the level of light in the room.

Horizon's alarm sounds for 3 minutes, then it shuts off, or rather it goes into snooze, for 9 minutes. Then it sounds the alarm again for 3 minutes, followed by snooze for another 9 minutes. After this final snooze period, it starts playing, and keeps on playing until it is manually shut off. The light shuts off with the audio.

After the wake-up process is finished, and the radio alarm has been turned off by pressing the alarm button, it is necessary to press the radio button to keep the radio playing.

Since the internal wake-up signals and FM radio do not permit adjustment of the wake-up signal volume, it may be desirable to use an alternative signal source. Connect a smartphone with Bluetooth, and set the Horizon to use the Bluetooth input for wake-up sound. If you reduce the output volume on your smartphone to a suitable level, you will experience a much lower signal volume when Horizon activates the smartphone through Bluetooth when the wake-up time has been reached. With a smartphone, both music from the phone's internal memory, its FM radio, web radio or streamed music may be used. If you want to wake up to a certain song, select the desired tune on the phone, and when it receives the Play command from Horizon, it will begin the right tune.