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7.0 Current Ratings Charts

Bosch Security Systems, Inc. | 3/12 | F01U266055-01 23

7.2 Standby Battery Calculations

UL 365 requires 72 h of standby battery capacity. Limit the auxiliary power current for all devices,

including keypads, to 300 mA or less to meet this requirement.

Table 6: Standby Battery Requirements

Type Required Capacity Calculations

Household Burglary and

Commercial Burglary

4 h

Bank Safe and Vault

72 h (UL 365). Auxiliary power

current for all devices, including

keypads, must be limited to 300 mA

or less to meet this requirement.

Central Station or Local Fire Alarm 24 h + 5 min of alarm operation.

Remote Station or Auxiliary Fire

Alarm

60 h + 5 min of alarm operation.

Household Fire Warning

Equipment

24 h + 4 min of alarm operation.

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Bosch D1255RB Manuale Utente Pagina 23