"remember to change your batteries every year"
BRK Electronics recommends when replacing hardwired battery back up batteries, to use the same brand as what was provided. The recommended replacement brand battery to use for models 4120B, SA4120B, SA4121B, 4120SB, is an Eveready Heavy-Duty (1222) or Energizer MAX (522). Using the same brand as what came with the original helps to ensure an optimal working condition and performance for both the battery and smoke alarm. Using any other type of battery could cause the unit to be faulty and in some instances the internal parts could overheat.
As in the first article, always remember to change your batteries every year and also check your smoke alarms weekly. Smoke alarms reduce fire related deaths by more than 50%, with the main cause of death having to do with missing, disconnected, or dead batteries.
Tags: Battery Replacements, brk, Smoke Alarms
