1. Bedtimea yellow night-light you switch on by hand
  2. Wake-up timea green wake light
What your child sees on the PlayMonster Mirari OK to Wake! 8091, drawn from PlayMonster’s own description. A drawing, not a photo.

The tradeoff: The yellow night-light is switched on by hand and turns itself off; it is not a bedtime schedule. It may no longer be sold, and the back door is not described as a child lock.

From PlayMonster’s own pages and manual: the sources.

US · Not in the maker’s shop now; the manual is still online (checked on 7 September 2026)

Set this clock up

  1. Check the label against 8091 and these US v6.0 instructions. This page does not cover Teach Me Time!, the owl or another revision.
  2. Hold SET until SET flashes. Choose the time-display format with HOUR, press SET, then adjust the current time with HOUR and MIN. Check AM or PM and press SET to save. For the green wake light, hold WAKE until SET TO WAKE flashes, adjust its time with HOUR and MIN, then press WAKE to save. The OK TO WAKE indicator should stay visible.
  3. For an audible alarm, hold ALARM REVIEW until SET and the bell flash. Adjust its time with HOUR and MIN, then press ALARM REVIEW to save. If you want only the green light, use ALARM ON/OFF to leave the alarm off. Tap ALARM REVIEW to check whether a time or OFF appears. The bell and wake-light indicators describe different settings.
  4. For a nap, hold NAP until SET NAP flashes. Choose a duration with HOUR and MIN, then use WAKE to choose green light, sound or both. Press NAP again to start the timer; the flashing colon shows it is running. The manual does not list the shortest or longest nap you can set.
  5. Use AUTO-OFF to choose how long the yellow night-light and green wake light remain on. If the light has already gone out when you look, check that setting as well as the wake time.

The manual says this clock is not a toy, must not be placed in bed and is not suitable for children under 36 months. Keep the cord out of reach. Adults should handle battery changes and follow the manual’s battery instructions.

Check the age warning and whether your child is ready separately, and see how to set an OK-to-wake clock for other clocks.

Setup and everyday controls

You set it with the buttons on the clock. No app is needed, and no account.

How you set it
Set on the clock
Buttons on the clock
Yes
Change it from your phone
No
Account needed
No

When grandma, a sitter or the other parent sets it

Anyone can use the rear controls; there is no app. Show the next grown-up the wake-light time, the indicator that shows it is switched on and the separate alarm switch, and leave the times on your plan.

Buttons on the clock
SET, WAKE and ALARM on the back. The wake-up light and the alarm sound have separate switches, so show the next grown-up both on-lights.

App or buttons: which suits your family?

Schedules, light and sound

Switches on by itself every day.

What you can schedule on this clock

  • Bedtime light at a set timeNo
  • Wake-up light at a set timeYes
  • Nap timerYes
  • Different weekend timesNot in the manual
Wake-up light at a set time
Yes
Bedtime light at a set time
No
Nap timer
Yes
Can also start it by hand
Yes
Silent wake-up light
Yes
Alarm sound
Yes
Dimmable light
Yes
Shows the time
Yes
Dimmable time display
Yes

Features the maker’s manual doesn’t mention aren’t listed here, so the clock matcher won’t suggest this clock for them.

A nap timer and a nap wake-up time work differently. The planner keeps them separate.

Clocks changing, or an early riser? Move the wake-up light in small steps with the clock-change planner.

Without Wi-Fi or a phone

It has no app and needs no Wi-Fi: you set and change everything on the clock, and it runs by itself.

Power, and what happens in a power cut

Plugged in

The manual does not say whether it keeps running when the plug comes out.

The manual does not say if it runs on battery · USB cord (included); wall adapter not included; optional four AA backup batteries

Runs on battery?
The manual does not say if it runs on battery
Power connection
USB cord (included); wall adapter not included; optional four AA backup batteries

See why a battery that keeps the settings is different from one that keeps the light on.

Subscription and included parts

No subscription: everything works on the clock.

In the box

  • Clock
  • Two interchangeable faceplates
  • USB cord

Do OK-to-wake clocks need a subscription?

When your child outgrows the light

PlayMonster Mirari OK to Wake! 8091 has a sound alarm you set apart from the wake-up light, so it can become your child’s alarm clock once school mornings start. When to move on to a kids’ alarm clock.

Check it in your home

While you can still return it, try the buttons you will actually use. These are checks for you to make; we have not tested this clock.

  • Find how to change the times and switch the wake-up light on, then check it shows the light and sound you chose.
  • Check the brightness, the volume and where the clock stands, using the maker’s placement advice. Check what the lock stops and which buttons still work.
  • Use the clock’s own preview or test, if it has one, rather than unplugging it or resetting it to see what happens.
  • Show the other parent, a grandparent or the sitter the buttons. Read what to do after a power cut before you need it.

Agree on what the light means and what to do if it does not come on, then keep the manual or the maker’s help page with your plan.

Show your child what this clock’s light means, and leave a note for the sitter.

If the light does not come on, check the time, the mode and the power before you reset the clock.

Questions about the PlayMonster Mirari OK to Wake! 8091

Does the PlayMonster Mirari OK to Wake! 8091 need an app?

No. You set it with the buttons on the clock, and no account or Wi-Fi is needed. App or buttons? →

What does my child see on the PlayMonster Mirari OK to Wake! 8091?

Bedtime: a yellow night-light you switch on by hand. Wake-up time: a green wake light. See the drawing →

What happens to the PlayMonster Mirari OK to Wake! 8091 in a power cut?

The manual does not say. The manual calls its four AA batteries a backup but does not say which lights keep working in a power cut or what the clock remembers. Afterwards, check the time and that the wake-up light is still switched on. Battery or memory backup? →

Can the PlayMonster Mirari OK to Wake! 8091 do naps?

Yes, it has a nap timer that you start at nap time. Nap timers vs nap wake-up times →

Can I set a different time for weekends?

The maker’s pages do not say, so plan to change it by hand at the weekend. Plan a new wake-up time →

Does the PlayMonster Mirari OK to Wake! 8091 have an alarm?

Yes, it has a sound alarm you set apart from the wake-up light, so it can become your child’s alarm clock later. Kids alarm clocks →

Can grandma or a sitter change it?

Yes, with the buttons on the clock; nobody needs an app or an account. Sharing a clock →

Instructions for this clock

Where these facts come from