Hello MichaelD,
Thank you for bringing this to our attention. We appreciate you letting us know your inquiry if there's an alarm that notifies you when the item has finished and how often it sounds off, and if it shuts off after a time. We understand how important it is, and we're here to help.
As per checking, once you set the length of time you want the timer to run using the number pad, the display counts down and beeps when the time has elapsed.
You may also check pages 10-11 of the user manual to learn more about the kitchen timer and how to set it for reference.
https://downloadcenter.samsung.com/content/UM/202001/20200123151031862/2017.12.14_ME18H704SFB_S_W_AA_AC_EN-CFR.pdf
You may reach out via our Support Channels below to speak with a live representative for other concerns.
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.commuity.samsung.com/t5/Samsung-Community/ct-p/us
Thank you, and stay safe!
Your Reference Ticket Number: 1144500158
-Angelica