pre-set /ˌpriː ˈset◂/ BrE AmE adjective [usually before noun]
decided or set at an earlier time:
The heating automatically switches on and off at pre-set temperatures.
pre-set /ˌpriː ˈset◂/ BrE AmE adjective [usually before noun]
decided or set at an earlier time:
The heating automatically switches on and off at pre-set temperatures.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012