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  • Battery monitoring unit integrated into the door guard board
  • if the voltage drops below 8 V, an acoustic alarm sounds for about 10 days
  • Not compatible with Art.-No. 901900

Attention: This is only an extension of the Exit Control 179/1125s. Please order the respective Exit Control 179/1125 additionally. You are also welcome to send us your existing door guard and we will handle the conversion for you.