SET: 1pcs monitor MS-715, 1pcs camera MS-757Built-in 2.4G digital wireless systemMS-715 Built-in wireless monitorMS-757 Built-in wireless cameraVaried installation ,U or butterfly or fan brackets optional20G force for vibration and 100G for shock4 split view, 4 CH video, and 1 CH audio, with 3 triggers. Recording function optionalDesigned to withstand the shock and harsh vibrationInput voltage: from DC10V-36VOne SD card input, maximum storage 128GB, for one channel D1 video can record 240 hours, for four channels D1 can record 60 hours