(1) Door sensor-transmitter and (1) receiver-sounder
Model DA4DAC is the basic Model DA4D system (complete set motion sensor with remote sounder), for doors or entrys that are open or closed, with the added feature of being able to use power supply for the motion sensor /transmitter), for those locations with high traffic, to eliminate battery replacement. The motion sensor / transmitter includes an AC transformer with 6′ of cord that simply plugs into a 110v AC electrical outlet. If your location has an electrical outlet near the entrance or area of protection, then the DA4TAC is the ideal unit for never having to change a battery and always having the alerting notification you desire.
Note: Notice in the picture the “extra” transformer to eliminate the battery in the door sensor-transmitter.
The Model DA4DAC AC power door chime has all the exclusive designs of the best motion sensor alerting system available, the Model DA4D, with the advantage of no more battery changes.