From Amazon
Astro Digital Daily Switch Type 128182300000PAS, Series 12 Finder
Rapid Online
Finder 12.81.8.230.0000 Digital Time/Astro-Switch 16A 1 CO (SPDT)
Conrad Electronic
Finder DIN rail mount timer Operating voltage: 230 V AC 12.81.8.230.0000 1 change-over 16 A 250 V AC Astronomical