Parkmate PTS440BSD 4 Sensor Front & Rear Blind Spot Detection System factory speaker adaptors The sole difference is impedance:

The sole difference is impedance: P3D4-10 is 4-Ohm per coil (2-Ohm parallel / 8-Ohm series)

A larger AWG gauge requires more total copper cross-section

Features: Front Camera – FHD Full High Definition 1080P Resolution

Built-In Microphone: No

Parkmate PTS440BSD 4 Sensor Front & Rear Blind Spot Detection System factory speaker adaptors The sole difference is impedance:Eliminate Blind Spots for Complete Safety Parkmates PTS440BSD front and rear blind spot detection system features visual and audible indicators that assist in monitoring both front and rear areas that are not visible through side view mirrors, helping you keep your eyes on the road, your hands on the wheel and ensure passenger and road user safety. Every vehicle has blind spots, and they can be a significant factor in road accidents. Parkmates blind