The battery voltage can be checked using either of the following methods.

1. Check using the GOT utility function
 • For the GT37, GT27, and GT25
  Select [Utility main menu] → [GOT basic set] tab → [Time] → [Time setting] tab to display [GOT internal battery voltage status]. 
 • For the GT21
  Select [Utility main menu] → [Time setting] to display [GOT internal battery voltage status].

2. Use the system signal "Built-in Battery Voltage Drop signal"
 When battery voltage drop is detected, system signal 2-2.b12 turns on. 
 Set the system signal from system information in the screen design software.

3. Check using the system alarm (GT37, GT27, and GT25 only)
 When battery voltage drop is detected, a system alarm occurs. 
 (500 The GOT built-in battery voltage has dropped.) 
 Check the system alarm by placing an alarm display on the screen or using the utility function.

For details, refer to the manual of the GOT or screen design software.