Features: 1.Parking Radar: The maximum effective range is 2.5 meters, automatically detect obstacles behind the car when reversing, automatically open, switch. 2.Low Failure: Microcomputer intelligent control, accurate digital display of obstacle distance, patch motherboard, beautiful and neat, failure rate is less than 0.3%. 3.Probe Design: 22mm probe concave design, not easy to accumulate water, unique design to effectively prevent ultrasonic detection to the ground and false alarm. 4.Manufacture: Adopts high performance chip, faster and more accurate, anti interference cable, not affected by the original car signal, beer head design, easier to plug and insert. 5.LED Display: Crescent shaped LED step by step display, with sound and high brightness distance prompt, not affected by rainy days, dark night environment. Specification: Item Type: Car Parking Sensor Kit Material: ABS Display Type: LED Applicable Model: Car Power Supply Voltage: 12V DC Current Consumption: 20mA-200mA Maximum Power: 2W Working Frequency: 40KHz Probes: 4 Alarm Prompt: Equipped Detection Distance: 0.3-2.5m/11.81-98.43in or 0.4-2.5m/15.75-98.43in Alarm Distance: 0.3-1.5m/11.81-59.06in or 0.4-1.5m/15.75-59.06in Alert Type: Digital band display Working Temperature: -30~70(C) Alarm Volume: 70~85dB (at 30cm/11.81in) Display Size: Approx. 100x22x26mm/3.94x0.87x1.02in Main Machine Size: Approx. 105x60x22mm/4.13x2.36x0.87in Probe Size: Approx. 22x20mm/0.87x0.79in PackageList: 1 x Host 4 x Probe 1 x Monitor 1 x Hole Cutter 1 x Power Cord 1 x Manual 2 x Double Sided Adhesive Sticker