How do you set the code at power up for a Telko S008B motion sensor?

This will depend on the AUX cord your using. Not all AUX cables have a power supply as part of the wire. That is a simple detector so it will most likely need the 9 volt to power up.

I searched using Google and could not locate a manual.

I did see this for sale on eBay today that may or may not contain instructions in the package. Since the price is low, it may be worth risking a purchase in case it has the instructions included. Or you may want to email the vendor.

https://www.ebay.co.uk/itm/Telko-Home-Security-Safety-Sentry-S003M-Door-Entry-Alarm-Chime/372342423205?hash=item56b1567ea5:g:h9MAAOSwZ-Ba33dh

Telko Home Security Safety Sentry S003M Door Entry Alarm Chime eBay

Gil: This website says you can download your manual online: https://docs.google.com/document/d/159CHjERQNqkHp9ZjvUs-L56HBy7T_mfAGhWlbK3H-Ug/edit

Look up the Manufacturer on the internet or write to them and request an owners manual and they will probably send you one for free.
Gillight

i need to reset code on my Telko s050a?

I lost my manual alarm Telko s008b. need it to redo the configuration

I save the operation manual instructions. Hope it help you.
Eduardo

Nesecito manual programming! s008b of Telkes. Thank you now!