Turn on the auxiliary lighting when the environment is dark, and adjust the brightness of the auxiliary lighting source according to the distance from the object being observed. Night vision devices use low-light detectors. When there is a certain light source in the environment (such as street lights, moonlight), there is no need to turn on the auxiliary light source. You only need to adjust the focal length of the objective lens to make the observed objects clear. Environmental requirements and precautions: The night vision device should be stored in a soft bag. The operating environment is -5â~40â, and the relative humidity does not exceed 80%. Night vision goggles should be stored in a clean, dry place to protect the lenses from moisture, mo-ld, heavy pressure, mechanical damage, moisture and solar radiation. If you need to clean the optical surfaces of the objective lens, eyepiece, and la-ser illumin-ator, you should first blow off small sand and dust, and then wipe the surface with a fine soft cloth. If the night vision device is not used for a long time, please recharge the battery frequently to prevent the rechargeable battery from failing.
Turn on the auxiliary lighting when the environment is dark, and adjust the brightness of the auxiliary lighting source according to the distance from the object being observed. Night vision devices use low-light detectors. When there is a certain light source in the environment (such as street lights, moonlight), there is no need to turn on the auxiliary light source. You only need to adjust the focal length of the objective lens to make the observed objects clear. Environmental requirements and precautions: The night vision device should be stored in a soft bag. The operating environment is -5â~40â, and the relative humidity does not exceed 80%. Night vision goggles should be stored in a clean, dry place to protect the lenses from moisture, mo-ld, heavy pressure, mechanical damage, moisture and solar radiation. If you need to clean the optical surfaces of the objective lens, eyepiece, and la-ser illumin-ator, you should first blow off small sand and dust, and then wipe the surface with a fine soft cloth. If the night vision device is not used for a long time, please recharge the battery frequently to prevent the rechargeable battery from failing.
Sellers offer a range of delivery options, so you can choose the one thatâs most convenient for you. Many sellers offer free delivery. You can always find the postage cost and estimated delivery date in a sellerâs listing. You'll then be able to see a full list of delivery options during checkout. These can include: Express delivery, Standard delivery, Economy delivery, Click & Collect, Free local collection from seller.
Your options for returning an item vary depending on what you want to return, why you want to return it, and the seller's return policy. If the item is damaged or doesn't match the listing description, you can return it even if the seller's returns policy says they don't accept returns. If you've changed your mind and no longer want an item, you can still request a return, but the seller doesn't have to accept it. If the buyer changes their mind about a purchase and wants to return an item, they may need to pay return postage costs, depending on the seller's return policy. Sellers can provide a return postage address and additional return postage information for the buyer. Sellers pay for return postage if there's a problem with the item. For example, if the item doesn't match the listing description, is damaged or defective or is counterfeit. By law, customers in the European Union also have the right to cancel the purchase of an item within 14 days beginning from the day you receive, or a third party indicated by you (other than the carrier) receives, the last good ordered by you (if delivered separately). This applies to all products except for digital items (e.g. Digital Music) that are provided immediately to you with your acknowledgement, and other items such as video, DVD, audio, video games, Sex and Sensuality products and software products where the item has been unsealed.
Sellers have to offer a refund for certain items only if they are faulty, such as: Personalised items and custom-made items, Perishable items, Newspapers and magazines, Unwrapped CDs DVDs and computer software. If you used your PayPal balance or bank account to fund the original payment, the refunded money will go back to your PayPal account balance. If you used a credit or debit card to fund the original payment, the refunded money will go back to your card. The seller will effect the refund within three working days but it may take up to 30 days for Paypal to process the transfer. For payments funded partially by a card and partially by your balance/bank, the money taken from your card will go back to your card and the remainder will return to your PayPal balance.