How to apply emergency power (9v alkaline battery) if batteries are completely depleted, along with how to change batteries in a battery pack (6 x 1.5v C-cell alkaline batteries). For Tecnosicurezza's MiniTech safe lock.
0:00 Introduction, BATTERY LOW message
0:32 Applying emergency power to the keypad
1:44 Changing batteries in a large battery box
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