4.3inch CCTV Tester — 5MP HD Analog (CVBS/CVI/TVI/AHD) Auto-Adaptive PTZ & 4K IP Camera Monitor

Important safety precautions: Do not use in environments containing flammable gases. When operating the instrument, follow local electrical regulations and avoid locations where electrical equipment is restricted, such as hospitals and gas stations. Keep the unit dry — do not expose it to rain or moisture, as this can harm performance or cause damage. While charging, do not leave the device unattended; if the battery becomes excessively hot, disconnect power immediately. Charging time must not exceed B hours. Avoid using the tester in areas of high humidity. If the equipment becomes wet, immediately disconnect the battery, power cable, and all other cables.