1byone DIY Receiver Driveway Alarm, Easy Installation with Upgrade Auto-learning Code, Blue LED Indicator
What's in the Package
The door chime kit comes with:
1 x Receiver
2 x Wall Plugs
2 x Screws
1 x Instruction Manual
Functions Instruction
Basically, there are two parts to the Driveway Alert Doorbell System.
The Transmitter contains a passive infrared sensor, which detects the moving heat created by an automobile engine (or any other noticeably hot object moving at sufficient speed). It can send signal to the receiver.
The transmitter should be deployed outdoors, where it will have a clear view of the driveway.
The Receiver mounts inside your home (or business, warehouse, shed, aircraft hangar, secret underground submarine dock, moon base - where you need it, really, provided its within range of the outdoor unit). It contains a LED and a speaker to let you know when the outdoor unit detects motion.
Specifications
Receiver unit
Power: 2 x 1.5V AA alkaline batteries (not included)
Operating Distance: 300 feet in the open field
Selectable Tone: Total 36 melodies available
Digital Code Type: Auto-learning