What size batteries does the ULTRONIC ws-9 take

You can't. All televisions need a remote.

https://www.google.com/search?q=ultronic+2121e+cr+remote+replacement

..

You can purchase them on ebay or amazon,
you can get them on www.alibaba.com -see the link
Ultronic Weather Station Clock Ultronic Weather Station Clock Suppliers


Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/bryan_4d4c18793378ea97

Press the "Down" button to toggle between Celsius and Fahrenheit.
Press the "Up" button to turn the alarm on and off.
For complete instructions on the Ultronic clock thermometer, see:
https://pdfslide.net/documents/ultronic-clock-cl-266instructions.html

www.ultronic.co.uk
or www.ultronic.com
or just google ultronic and the model number!!

If not found with the model and Google try to find the website for the maker.

I have the instructions that came with the clock. But scanned document is too big to up load on FixYa. The document is a little over 3MB, but exceeds FixYa allowable upload.So send me your email or fax number and I will forward.

This may be helpful, it's how I set mine.
1) Remove battery cover
2) Remove batteries
3) "Set" the clock and battery cover into the trash can.

There you go. No more problem !

need a manual for a Ultronic clock radio calculator model WS-9

Mitsubishi's have been known to "burn in" when you have a stationary image on the screen for too long. Usually its not a problem but in some cases I've seen..if its hours and hours of game play..or even places like home shopping network that have phone numbers that never move during the broadcast...it can cause the image to burn the screen.

The projection tubes would not be burned...it would be the mirror viewing screen.