Read more 7-inch Wireless FHD Touch Screen Monitor PRECAUTIONS Storage and Keeping Do not expose the monitor to excessive heat or coldness. Storage temperature is -30~+80℃; Operating temperature is -20~+70℃; Battery operating temperature is 0-70℃; Humidity is Rh90%. Never use this device near a bathtub, wash basin, kitchen, damp basement, swimming pool or similar places. Never use this device in the environment with excessive moisture, dust or smoke. Avoid dropping or striking. Never use this device in enclosed spaces, areas with excessive vibration or subject to severe impacts. Never puncture, scratch or use abrasive cleaning materials on this device. Do not place cables where they may be pinched or stepped on. Leave at least a 2″ space between the monitor and walls, cabinets or other objects to allow adequate air circulation around the device. The monitor is not designed to be waterproof. Operating Precautions 1) The device may be powered by a 12 or 24v automotive battery or vehicle electrical system. 2) Make sure all cables are connected properly. Observe polarity. Improper cable connections may damage the monitor. Remove the power cable connections when you do not intend to use the device.