Night Vision Monocular Military Tactical Gen 2+, Infrared Night Vision Hand-held, Helmet-Mounted HD Scopes for Outdoor/Surveillance/Security/Hunting/Monitoring

DM2021 is most popular milspec and versatile Infrared Night Vision Monocular versatile on the market.It can be used handheld, head mounted or helmet mounted for hands-free, or attached to a camera or camcorder for nighttime photography and law enforcement to document. This system enables walking, driving, short-range surveillance, map reading, vehicle maintenance, and administering first aid in both moonlight and starlight. With automatic protective system controls, the monocular will shut off automatically if the illumination level surpasses 40lux for the following 10 seconds. And automatic brightness adjustment system always keeps IIT brightness level constant. Slightly press down the power switch to push the gear to ON to start the power, and you can observe the green power indicator at the edge of the green fluorescent screen through the eyepieces (the light flashes when the battery voltage is low). When the ambient light is not enough, push the power switch down to IR to start the infrared. At this time, the infrared indicator light is on at the edge of the phosphor screen, and the infrared auxiliary light source also emits red light and automatically focuses. Note: When the infrared is turned on, the light emitted from the infrared auxiliary light source can be found by people who are also using night vision devices. When locking the observation target, first adjust the objective lens by rotating the objective lens focusing ring, adjust the image effect to the relatively best position, and then adjust the eyepiece by rotating the eyepiece focusing ring, and also adjust the image to a relatively maximum Optimal position, usually the image can achieve the best effect after repeated adjustments for three times. It's better to use device under +5°C to +40°C. After the unit usage in temperatures below zero, wait at least 3 hours at room temperature, to avoid condensation accumulating on the internal lens surfaces and the consequent fogging caused by extreme temperature differences. Keep the device in soft carrying bag, ventilated and dry place with temperature which does not exceed +15°C. Keep away from heating device and avoid direct sunlight and high humidity which does not exceed 70%. NVD should be used in nighttime and can't be aim at strong light. If you have to test it during daytime, the front lens cap should never be removed. You can observe the target through the hole in the protection cap. Use good quality lithium battery or alkaline cell, as bad quality batteries will effect the performance of the NVD and easily damage the device. Try to avoid the rain and mist, and avoid dropping, shaking and collision. Use clean soft cloth and dampened in alcohol, if necessary. A useful tip is to remove the battery when the night vision will be not in use for over 3 days to prevent battery leakage and damaging the device. The observed image flickers or flashes This means there is too much light(e.g. observation during twilight conditions).Turn off the unit or place the objective lens cover. The unit will function normally in light conditions not in excess of 0.1Lx(full moon). The image is missing or not focused 1.Re-focus the unit by adjusting objective lens. Adjust diopter setting by rotating eyepiece, if necessary. 2.Check the cleanliness of the objective surface and eyepiece and clean if necessary. 3.Replace batteries. 4.In extreme low light conditions, activate the built-in IR illuminator.