Hign-concerned Chemical:NoneOSD Language:EnglishTalk Range:0.3m-2.5MModel Name:KZ099468Type:InvisibleBrand Name:First SafeOrigin:Mainland ChinaMaterial:ABSCertification:CE,RoHSSensor system:4/6/8 PCS 22mm SensoPower:DC-12VSound:Can send out alarm BIBIColor:Black/White/Gray/Blue/Silver/Red/Champagne-goldMultiple Radar Parking Sensor Kit Backlight Park tronic LED Display System Backup Monitor Detector Assistant 4/6/8 Radar Sensor Sensor's Diameter: 22 mm Features: Rate voltage: 12V DC Rate operating range: 10.5V - 16V DC Rate current: 100mA - 300mA Detecting distance: 0.3 - 2.0m Ultrasonic frequency: 40KHz Control moudle working temperature: -30 - 80 celcius degree Main control box size: 4sensors( 91* 60 * 22mm) 6/8 sensors (98* 71 * 26mm) Package including: 1 * Main Control Box 1 * Buzzer display (Beeper Designed In the Display) 4 * Parking Sensors(4/6/8 depending on the number of sensors purchased) 1 * Hole Saw 1 * Power Cable 2 * Double Side Sticker 1* User manual