Question: When the conversation is not heard in a voice intercom but the buzzer and door lock work then the most probable fault is a

When the conversation is not heard in a voice intercom but thebuzzer and door lock work then the most probable fault is a 

When the conversation is not heard in a voice intercom but the buzzer and door lock work then the most probable fault is a damage in the power supply unit. O a. False. O b. True If the float switch is connected to phase line instead of the neutral then the pump will not work. O a. False. O b. True

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