This is a new, unused item that has been kept after purchase. The following is a reprint from the product page: 1. Auto door lock when driving 2. Door lock release when stopping 3. Hazard lights flash when the door is opened 4. Hazard lights flash when shifting to R (reverse) 5. Automatic lock release during sudden braking. Note: Hazard light linkage function may not be available depending on vehicle specifications and individual differences. Compatible models: Noah/Voxy 90 series R4.1～, Prius 60 series R5.1～, Sienta R4.8～, Aqua New Model R3.7～, Yaris R2.2～, Yaris Cross R2.9～ Safety & Convenience Up: Automating door locks and hazard lights improves safety and convenience! Mode Switching & Easy Installation: Function switching is possible to your liking. Simply plug it in, and installation is complete in just 3 seconds. P03537