VARDA-alarm is an acronym which stands for Voice-Activated Radio-Dispatched Alarm. It is a type of burglar alarm that, when activated or "tripped", broadcasts the type of the alarm and the transmitter location over the local police radio frequency using a pre-recorded audio message. It bypasses "911 Dispatch system" and sends a red alert to all police within the vicinity.
The name of the dead husband "Frank Ochoa" is the same name of the Detective in Death Wish & Death Wish 2 played by Vincent Gardenia