Bosch B4512 - Page 185

Control Panels B92x/B91x Settings menu | en
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Bosch Security Systems B.V. 2019.06 | 07 | F.01U.307.371
10. Press ENTER to save the time. For 24 hour format systems, the
keypad shows Change complete and then returns to the previous
menu. For 12 hour format systems, the keypad shows the AM or PM
selection option. Follow the prompts to select a format and return
to the previous menu.
11. Press ESC to exit the menu.