Usage Tips:About this item: [back up camera systems for car]: Equipped with a 150 high-definition wide-angle camera to that you can clearly see the area behind the car, making it easier to connect with the trailer of the reversing RV. The attached magnet and sticker base fix the backup camera wireless, Two different bases can be used for different models and scenes. [Multi-functional back up camera systems for truck]: This backup camera for truck has multiple connection methods such as WiFi and Bluetooth. The mobile phone downloads the APP, which can be connected to the back up camera for truck rv for remote control. The wireless backup camera for trucks can be Insert TF card for recording videos and photos. [Infrared night vision and waterproof function]: This rv backup camera wireless is equipped with four infrared lights, which can that the use of the rv backup camera will not be affected at night and in dark places. The body is waterproof, even in Use as usual, not easy to damage. [Smart function and voice detection security mode]: (this mode must be set to open in the back up camera mobile app), when the wireless backup camera for car detects a moving object or sound, it will send an alarm to the connected mobile phone, and Take 3 photos, and save the video and photos to your mobile phone files and TF card at the same time. Reverse Hitch Guide Camera Compatible Devices: Monitor Voltage: 12 Volts Optical Sensor Technology: CMOS Lens Type: Wide Angle Connector Type: Wireless Multi-function: video monitoring, audio synchronization, taking pictures, night vision mode, 210 adjustable camera, intelligent motion and sound detection. Material: Plastic colour: Black Package Contents: 1 x Main unit 1 x Charging cable 1 x Fixing bracket 1 x Magnetic base Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.