< p> Pioneer′s optional rear parking sensors ND-PS1 are easy to install and are designed to be connected directly to Pioneer′s SPH-10BT or SPH-20DAB. When connected, you can park easily and safely thanks to the audio and visual illumination warnings on the headunit. < br> < br> < br> < br> Additionally, when used in conjunction with Pioneer′s SPH-10BT, SPH-20DAB and Pioneer Smart Sync app, you can also experience the parking assist display on your compatible smartphone screen.< /p>