DA-04 ACCES CONTROL BY INTELLIGENT BELL (Web only sales)

The Da-04 is an intelligent circuit that, connected to the doorbell of any home or premises, is capable of memorizing a melody made on it and recording it.

Once this operation has been performed, the module will only connect the relay output that it incorporates, if the person who presses the bell reproduces exactly the previously recorded melody, thus controlling access to that premises.

Otherwise, the doorbell will sound and behave like a normal doorbell.

Adjustable output time between 1 and 4 sec. It incorporates self-locking against failed access attempts, outputs for door opening button, doorbell button, LEDs and protection against reverse polarity (P.I.P.).

Recommended Power Supply: FE-103 - FE-300