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Does it have a screw hole on the bottom of mount device on tri-pod?

It depends on the model, but even if not, there is another installation system that you can use for connection with a tripod by using an adapter.

We switched this item “on” for just a five minutes, and now it is not working? Can you advice please?

There could be a few reasons. Check that the battery is installed correctly. Check the charge of the battery. Replace if it is weak. If you opened the lens cap and switched ON the item during daylight, without reading the manual, probably the reason of fault, you will find below. Operating in daylight, you may switch ON the device for a short period, for testing purposes only. The protective cap must be on the lens at that time. There is a small hole on the lens cap, so you will be still able to see the view. Warning: If the device is not described as for day use, never switch on the device during the daytime, without the protection cap of the lens. Doing that could result in damaged power supply and/or image intensifier tube and related costly repairs that are not covered by the warranty. Some of the models have got automatic brightness protection to avoid problems above. Please check the manual if your device has that function.

Can I buy any night vision device that can be used under daylight?

Yes, please see our offer at “Advanced Technology” category.

What will happen if you turn 'on' the module in bright light, does sensor burn out?

Yes, it can as the manual mentions this although many devices have a Bright Light Protection system which shall switch OFF device automatically.

When the infrared is switched ON, is it visible to others? If yes, from what distance it can be seen?

Yes, the Infra Red light can be seen although not from very far as it is quite a dim glow, especially if you will look directly in the IR lens from a small distance. Please be aware that from another night vision units the IR can be seen. This depends on the type of your Infra Red and quality and generation of equipment which has your opponent.

What IR emitters do you have on your offer?

The Infra Red used with our devices is 850nm. Depending on the customer's expectations and type of order that can be customised.

Is it possible to use devices with glasses?

The soft eyepiece and long eye relief make it easier for people who use the glasses. Some models have a diopter adjustment; therefore you can use the device without glasses if your vision defect does not exceed it.

Can I look up at the stars with this scope and see them with the infrared night vision?

You can, but it is not intended for star gazing but watching nocturnal wildlife. The infrared light will not reach the stars. Ordinary binoculars or a small telescope are best for looking at the night sky.

Can it be used through a window - for example, patio doors overlooking a garden?

It can be used through a window if you do not use the Infra Red light beam. If you use Infra Red emitter it will reflect the light on the glass, and probably you will not be able to see anything. The solution is to install outside independent external IR or another source of light.

How can I turn it off? There is an 'on' button, but it doesn't say it is also an 'off' switch.

The ON button turns ON or OFF alternatively every time it is pressed. The Infra Red ON/OFF button will only switch ON the Infra Red emitter and minate the view when the unit is ON. When you switch OFF device please don't worry if the little light does not go out right away because usually, it takes a few seconds.

Can I fit this device to a crossbow?

All devices have a system which allows them to be mounted on the weapon directly or through Weapon Mount. Therefore if your crossbow has any rail mount system, you can attach to it your Night Vision device. Please be aware, when you take positions to shoot an arrow, that the distance between the crossbow and your eye may be too large for comfortable use the device.

What type of batteries are used in devices? Are they easy to find on the market?

Depending on the model the devices use two types of batteries: CR123 or AA. They are very easy to find on the market although many of Rongland devices you can buy with rechargeable batteries and chargers included.

Can I use monoculars with either eye on the headset?

On the head mount, there is the part "Swing arm" for attaching monocular. The part provides a choice for the buyer for which eye he wants to use the monocular so that can fit either right eye or left eye by turning it around.

Is this item suitable for wildlife watching at night?

Yes, the Rongland Night Vision and Thermal Vision devices have a broad range of applications. The wildlife watching is one of many applications the devices have been designed for.

Do your products have a built-in Infra Red emitter?

That depends on the model. The low light monoculars, binoculars, goggles and digital monoculars most commonly are equipped with built-in Infra Red emitter. The low light riflescopes and SP2 require an external IR.For the riflescopes and SP2, we always provide the external IR in the set.

Can I replace rechargeable battery with regular batteries?

Yes, if the batteries are of the same type and voltage as rechargeable batteries.

How long is battery life with/without illuminator?

It depends on the model of the device and the ambient temperature. Please read the detailed descriptions of products.

Could I use a digital camera with any of devices to take photos?

Yes. Please see te category 'Night Vision NV-6130 is a special module designed for Nikon and Canon DSLR cameras. ever, by using different camera rings the module can be adjusted to many other types of cameras. The module is equipped with built-in European Hyper Generation 2+/3 Image Intensifier Tube and may be combined with 3x, 5x, 7x magnifier lenses to further extend the viewing capability. Rongland also offers you several models of Digital Night Vision Monoculars with built-in photo camera that surely compete with the Generation 2 in image sharpness and brightness.

My device has an USB port. Would this allow to charge the batteries by any chance?

Unfortunately no. For safety reasons, most of the devices are designed to recharge this type of batteries in an external charger.

Does night vision work indoors?

Of course yes, night vision works indoors as well as outdoors.

Can I use night vision devices in the rain?

Yes. Most of Rongland devices are weatherproof. They work under severe ambient conditions where humidity is up to 98% but anyways we recommend you to dry it well after use if you want to store the device and do not use it for a long period.

Is IR safe for eyes?

The ordinary LED-based Infra Red emitter is completely safe for human eyes. It is no more dangerous or harmful than watching TV with led screen. The situation looks different while using laser Infra Red emitters which are high power devices providing a long range illumination capability. Most of laser Infra Red emitters can be very harmful to eyes, and they are restricted in use. The light from laser Infra Red emitters is extremely dangerous because it is not visible to the human eyes. Unfortunately, it still works like an ordinary laser and can damage the eyes if someone will look directly into the emitter.

What is the difference between Night Vision and Thermal Vision devices?

Night Vision devices intensify/amplify existing light instead of relying on a visible light source of their own. Night Vision electro-optical devices rely on at least a very low level of light, which is less than the human eye can detect, to amplify it and produce a picture. Equipment is sensitive to a broad spectrum of light from visible light to infrared. The image intensifier tube installed in the device generates an image from a minuscule number of photons such as the light from stars in the sky. The image is said to become intensified because the output visible light is brighter than the incoming light. However, that does not mean that the light is enhanced, but a frequency of the light is changed to the frequency that the human eye can see. Therefore user looks at the amplified electronic image on a phosphor screen, not directly through a Night Vision lenses. The image produced is typically monochrome and often uses shades of green. A Night Vision phosphor screen is purposefully coloured green because the human eye can differentiate more shades of green than other phosphor colours. Thermal Vision technology has a huge advantage over conventional Night Vision equipment and does not require any visible light to operate. That also means the devices does not require Infra Red emitter so you can observe everything around and stay invisible Night Vision will not work in complete darkness while Thermal Imaging will because Thermal Imaging cameras detect heat while low light Night Vision cameras have sensors which detect light. Thermal Imaging systems use sensitive to heat detectors for focusing the heat/infrared energy emitted by objects. Therefore Thermal Imaging equipment can work both in daylight as well as in complete darkness as it is unaffected by light. Thermal Imaging cannot see through a glass but can see in complete darkness and cannot be blinded by light.Thermal Image devices are precise advanced instruments, rich with features and technology that provides the best penetration through smoke, fog, dust, steam, bushes, tall grass and trees, etc. Thanks to uncooled detector the darkness, poor weather conditions, camouflage or bright lights do not affect the sensitivity of these units.

What will happen if I will look through my scope, and someone will turn on a bright light within my field of view? Will I be blinded?

If you will use your equipment in a feature film, as probably you seen it in the cinema many times, then you can think that YES. But the truth is that NO! If your scope is of a very simple design, the tube will cease to function in a matter of a second. And it will happen before any damage can be done to your eyes. If your scope is of a more modern design, it has an Automatic Brightness Control, which nearly instantly will cut all power to the tube if the light level gets too high. Be aware that the protection circuit should be seen as a safety feature only, and shall NOT be tested unnecessarily.

Are there any restrictions to buy or use night vision equipment as a civilian in the European Union?

You can purchase any device without exception from us, but please check your local laws as some countries prohibit the use or ownership of some night vision devices. For example, in Poland, you can be the owner of any Night Vision device, but be aware, that hunting with the night vision rifle scopes is prohibited and you may be prosecuted even if you are in possession of your night vision rifle scope together with the weapon while hunting.

Is it possible to use night vision in complete darkness?

Night Vision devices require a little light, but it is possible to use them in full darkness with an infrared illuminator.

I see small black spots. Does this mean damage to equipment?

Black spots are small cosmetic imperfections in the tube. Unfortunately, they are a natural attribute of Night Vision devices and inseparable in the manufacturing process of the tubes. If the permissible number and size of these spots exceed the guidelines, the tube is considered to be of inferior quality and usually disposed of. Also, the areas of the tube that are most exposed to the bright light source for extended periods of time can become completely desensitised, and appear as black spots.

Why the projected image is always green when using night vision technology?

The image produced by Night Vision devices is typically monochrome. There is possible to use colours other than green, but the human eye can differentiate more shades of green than other phosphor colours.

Depending on the country of production which of the products are better? For example better are products of Russia or made in the United States?

The truth is that Russia is the largest producer of advanced image intensifiers in the world. Russian-made night vision equipment, which also owes its origins to the Defense Industry, has always enjoyed a reputation of being among the best quality in the world. The reason of that is simple: most of the chemical elements needed for production Image Intensifier Tubes are located in Russia. Russians have the highest quality laboratories providing a sterile process of mounting tubes in a vacuum ambience. This means less dirt such dust which is the reason of black spots on the image, etc. Therefore less equipment is disposed of, what influence the lower price. The large majority of night vision products are of Russian origin, packaged and branded locally in many countries, usually by large optical manufacturers. However, the quality of equipment does not depend on the tube only, so American products have many modern features other than devices manufactured elsewhere.