I made A list Of Top 10 10 Best 4k Wireless Security Camera System in 2021.You Can Choose From This Given List.

1.Hiseeu Wireless Security Camera System 8 CH NVR 8Pcs HD 1080P

【3TB HDD Pre-Install, One Way Audio】Hiseeu Wireless Security Camera System 8 CH NVR 8Pcs 2K...
  • 【Easy setup, Need Plug Power Supply】Wireless video security system is easy to setup and DIY installation. Wireless means camera and NVR is wireless connection, but they still need work with power plug. True Plug and Play. 1) Connect the NVR and cameras with power adapter. 2) Connect the mouse to NVR, connect PC/TV monitor to NVR with a VGA/HDMI Cable. The Video will show up on TV or display.
  • 【3TB HDD Storage, Remote Playback】 With pre-installed 3TB HDD, it can keep around 30 days of 24/7 videos for 4 cameras simultaneously without overwriting. With FREE Eseecloud APP, for android and iPhone, all videos in the HDD can be playback remotely in your hand anywhere anytime. 8 channel NVR comes with advanced H.265+ compression ensures more stable and clearer viewing experience, saves 50% hard drive capacity.
  • 【Remotely Anytime and Anywhere】Wireless Surveillance Camera System Allows you to View the Live Video Remotely Anytime and Anywhere by Phone and Pad(Available for Android & IOS system). Download Free APP “EseeCloud” from Android Google Play or Apple APP Store. Register an New Account, then Add Device ID. You can View the Video by WiFi or 3G/4G Network. PC/Laptop View: Windows System: CMS Software. MAC system: MAC CMS Software.(Please Send E-mail to Hiseeu for Software)
  • 【Stunning 2K Ultra-HD video, one Way Audio】 3.0MP presents 2304*1296 Mega Pixels about 1.5 times clearer than 1080P. Camera with 3 array Infrared LED allows you to see up to 65ft night vision even in darkness. Employing IP66 Waterproof metal material housing, cameras can be used indoor and outdoor. Outdoor security camera system also allows you to see and listen to people on your property remotely.
  • 【High Quality Service】We have lifetime well-experienced engineers and Technical support, if you have any question pls feel free to contact us anytime, And we also provide Free 10FT Antenna, Customers may request 8% discount code toward Camera system by connecting us.

2.Hiseeu All in one with 10.1″ Monitor Wireless Security Camera System

[8CH Expandable, 2K] Hiseeu All-in-one with 8CH 10.1" 1296P Monitor Wireless Security Camera System,...
  • 【All-in-one 10inch LCD Monitor, Easy Setup】 The wireless security camera recorder equipped with 10 inch screen monitor(Not touch screen), 1080P full HD display clear image which view angle will be more widely. The cameras and NVR monitor are auto-paired during the factory setting. Just need to connect the wireless cameras and NVR with power supply provided for 24/ 7 surveillance purposes. Wireless means camera and NVR is wireless connection, camera and NVR still need work with power cable.
  • 【Expanable 8 channel cameras】This 8ch 1296P (2304*1296) 10.1" LCD Monitor NVR wireless camera system up to work with 8pcs cameras, supported original kits’ one way audio camera (B07JQZQRVG), two-way audio camera(B07FVSK6BY, B08HRPQMY3), PTZ camera(B08JYMYPCM, B081PRVDJ3, B08PY58W2M, B08RHM6VF2) and battery camera (B08HN4QXBY, B08TWG2N5D). Meet all your needs.
  • 【Stunning 2K Ultra-HD video, one Way Audio】 3.0MP presents 2304*1296 Mega Pixels about 1.5 times clearer than 1080P. Camera with 3 array Infrared LED allows you to see up to 65ft night vision even in darkness. Employing IP66 Waterproof metal material housing, cameras can be used indoor and outdoor. Outdoor security camera system also allows you to see and listen to people on your property remotely.
  • 【1TB HDD Storage, Remote Playback】 With pre-installed 1TB HDD, it can keep around 30 days of 24/7 videos for 4 cameras simultaneously without overwriting. With FREE Eseecloud APP, for android and iPhone, all videos in the HDD can be playback remotely in your hand anywhere anytime. 8 channel NVR comes with advanced H.265+ compression ensures more stable and clearer viewing experience, saves 50% hard drive capacity.

3.Hiseeu All in one with 12″ LCD Monitor Wireless Security Camera System

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Hiseeu [8CH Expandable, 2K] All in one with 12" LCD Monitor 3TB Hard Drive, Wireless Security Camera...
  • 【All-in-one 12inch LCD Monitor, Easy Setup】 The wireless security camera recorder equipped with 12 inch screen monitor(Not touch screen), 1080P full HD display clear image which view angle will be more widely. The cameras and NVR monitor are auto-paired during the factory setting. Just need to connect the wireless cameras and NVR with power supply provided for 24/ 7 surveillance purposes. Wireless means camera and NVR is wireless connection, camera and NVR still need work with power cable.
  • 【Stunning 2K Ultra-HD video, one Way Audio】 3.0MP presents 2304*1296 Mega Pixels about 1.5 times clearer than 1080P. Camera with 3 array Infrared LED allows you to see up to 65ft night vision even in darkness. Employing IP66 Waterproof metal material housing, cameras can be used indoor and outdoor. Outdoor security camera system also allows you to see and listen to people on your property remotely.
  • 【3TB HDD Storage, Remote Playback】 With pre-installed 3TB HDD, it can keep around 60 days of 24/7 videos for 4 cameras simultaneously without overwriting. With FREE Eseecloud APP, for android and iPhone, all videos in the HDD can be playback remotely in your hand anywhere anytime. 8 channel NVR comes with advanced H.265+ compression ensures more stable and clearer viewing experience, saves 50% hard drive capacity.
  • 【Expandable to 8 Cameras】This 8ch wireless camera system up to work with 8pcs cameras, supported original kits’ one way audio camera (B07JQZQRVG), two-way audio camera(B07FVSK6BY, B08HRPQMY3), PTZ camera(B08JYMYPCM, B081PRVDJ3, B08PY58W2M, B08RHM6VF2) and battery camera (B08HN4QXBY, B08TWG2N5D). Meet all your need.
  • 【Warranty, High Quality Service】One year free replacement warranty and efficient support offered! We have lifetime well-experienced engineers and Technical support, if you have any question pls feel free to contact us anytime, we also provide Free 10FT Antenna Extension Cable, customers may request 8% discount code toward Camera system by connecting us.

4.Reolink H.265 4K PoE Security Camera System, 6pcs 8MP Wired PoE IP Cameras

Reolink H.265 4K PoE Security Camera System, 6pcs 8MP Person/Vehicle Wired PoE IP Cameras, 8CH NVR...
  • 4K Ultra HD Night Vision: Record real-time live video with 4K Ultra HD (8MP, 3840 x 2160) and by a wide margin, outshine 5MP Super HD. The 18pcs powerful infrared LEDs emit lights that pierce the darkness up to 100 feet. Plus, advanced 3D-DNR technology dramatically reduces noise levels. Say no to blurry images and embrace the 4k definition.
  • Person/Vehicle Detection: Smart PoE IP cameras can identify people and vehicles in terms of their shapes, minimizing unwanted alerts such as animals or shadows. Cameras can also be configured to specify the type of detection when sending alerts to you. Know what happened simply by glancing at the lock screen.
  • Plug and Play PoE System: Connect the security cameras to the NVR with Ethernet cables up to 300ft, download the free Repolink APP and add the device information on APP. Just 3 steps for 24/7 surveillance purposes. Then you can live view and review locally through a monitor (not included) or remotely via Reolink app anytime, anywhere. Unlike wireless cameras, POE can offer a lossless video signal and a more stable network connection.
  • Continuous 24/7 Recording: With a pre-installed 2TB HDD, you are provided reliable 24/7 recording. You can also install an external hard drive (up to 6TB) for backup storage.
  • 2-Year Warranty & Life-Time Free Tech Support: Reolink products have a 2-year warranty and 30-day money-back guarantee. Fell free contact the Reolink’s Support Team anytime for any questions or problems via Amazon message. Please don't trust any paid technical supports.

5.Reolink 4K PoE Security Camera System, 4pcs Wired 8MP Outdoor PoE IP Cameras

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REOLINK Smart 4K PoE Security Camera System, 4pcs Person/Vehicle Detection Wired 8MP PoE IP Cameras,...
  • 4K Ultra HD – Reolink 4K Ultra HD (8MP) PoE camera delivers almost 4 times the clarity of 1080p. Our complete camera system provides users vivid resolution, even when you digitally zoom in. Any flaw or distortion you’ve encountered before has been eliminated, ensuring you the highest quality view of your surroundings.
  • Person/Vehicle Detection – Smart PoE IP cameras can identify people and vehicles in terms of their shapes, minimizing unwanted alerts such as animals or shadows. Cameras can also be configured to specify the type of detection when sending alerts to you. Know what happened simply by glancing at the lock screen.
  • Plug and Play PoE System – A simple PoE connection makes it easier to set-up and install your home security camera system. With a single network cable, stretching up to 330ft, users can enjoy smooth security coverage of their entire house. This is perfect for both beginners and DIY camera enthusiasts.
  • Continuous 24/7 Recording – With a pre-installed 2TB HDD, users are provided reliable 24/7 recording. You can also install an external hard drive (up to 6TB) for backup storage.
  • 2 Year Warranty – Users are provided with a 30-day money-back guarantee and a 2-year warranty. Simply contact Reolink tech support via e-mails and Amazon Message, and we will replace any defected or broken products.

6.Zmodo Outdoor Security Camera (4 Pack), 1080p Full HD Wireless Cameras for Home Security

Zmodo Outdoor Security Camera (4 Pack), 1080p Full HD Wireless Cameras for Home Security with Night...
  • 【Security-focused Hardware】Zmodo outdoor wifi camera is metal-made to resist extreme harsh weather, thus has a longer life. Enhanced antennas provide you with a stronger signal and wider Wi-Fi connection.
  • 【True 1080p HD Live Video Day and Night】Watch your home in true 1080p Full HD day and night, and see up to 65ft away in the dark. Videos can be viewed anywhere anytime from iOS or Android mobile devices and tablets, or web view on PCs.
  • 【Smarter Motion Detection】Be notified with a key image of an event when the security cameras detects an movement, so that you can take a sneak peak of what happened immediately. Tap into the app to check the motion video clips for more details.
  • 【Hands-free Voice Control】This home security camera system works with Alexa and Google Assistant. Go hands-free with Alexa by saying, "Alexa, show me the front door" to view a live stream from your camera.
  • 【30-day Free Trial of Zmodo Cloud Service】Enjoy a 30-day free trial of Zmodo 7-day cloud recording plan. With the plan, you can review, save, and share footage at any time, and reduce false alerts with cloud intelligence.

10 Best 4k Wireless Security Camera System in 2021

7.Wireless Home Security Camera Systems Outdoor With 10inch Screen Monitor, Wireless Complete Video Surveillance Camera System

【Expandable 8CH&Audio】Wireless Home Security Camera Systems Outdoor With 10inch Screen...
  • 【Audio Camera】The camera is without a battery.So each camera needs to be plugged into a nearby outlet for power.With built-in microphone in the camera, our Wi-Fi security camera allows you to listen and watch what happened through the APP in your phone clearly and instantly no matter where you are.Please note camera is a one-way audio, you can only hear the other party talking, not the conversation.
  • 【Easy installation and setup】Please note the system is NOT battery operated. Both NVR and cameras need to be plugged into nearby power outlets. The 1080P NVR with integrated 10-inch LCD display automatically pairs the camera wirelessly. Just connect the camera to the NVR with the internet. True plug and play setup. Even a beginner can install it in a matter of minutes. It is suitable for homes, offices, shops, hotels, etc.
  • 【APP & Remote Viewing】 Download free app "Eseecloud" from App store on your smart phone. With the web, you can watch it remotely from any location, anywhere, on your phone(IOS&Android), PCs, or tablet.
  • 【Motion Detection & E-mail Alert】The system supports motion detection records and e-mail snapshot alerts etc. So any motion detection will be recorded, and E-mail alert will be sent immediately to your smart phone.And we can customize the scope of detection.Minimize detection area to minimize false alarms.

8.Hiseeu Wireless Security Camera System with 10.1″ LCD Monitor

[8CH Expandable] Hiseeu Wireless Security Camera System with 10.1" LCD 2K Monitor, 4Pcs 1296P...
  • 【All-in-One, Need Plug Power Supply】Wireless video security system wireless CCTV camera system features a 10" full HD 2K monitor (Not Touch Screen). It is easy to setup and DIY installation. True plug and play. The wireless cameras and NVR monitor are auto-paired during the factory setting. You just plug all the power supply and connect TV monitor to NVR with a VGA/HDMI Cable. (NOTE: They all need to plug in the power adapter)
  • 【Expandable 8 Channel Cameras】Please search: B07K1CZN1L to order the extra camera to add to your camera system, This system includes 1x 8-channel 2K (2304*1296) 10.1" LCD Monitor NVR and 4 x 1296P (2304*1296) wireless IP66 waterproof cameras. Connect the NVR and cameras with power adapter, cameras coming with 10ft cable power supply, it is more convenient to install.
  • 【Waterproof& HD Video】Records in 1296P Full HD to capture sharp and crisp images, provide crystal-clear HD live video, in order to crisp smooth footage day and night the bullet cameras build in 3 array IR cut filter with auto switch. Up to 15m Night Vision, The IP 66 weatherproof aluminum housing material to keep Indoors & Outdoors recording.
  • 【Remotely Anytime and Anywhere】Wireless surveillance camera system allows you to view the live video remotely anytime and anywhere by Phone and Pad (available for Android & IOS system). Download free APP “EseeCloud” from Android Google Play or Apple APP Store. Register a New Account, then add by device ID. You can view the Video by WiFi or 4G/5G Network. Supporting Windows and MAC OS system computer download Eseecloud software to remotely check .(Please Send E-mail to Hiseeu for Software)

9.Hiseeu Wireless Security Camera System with 1TB Hard Drive

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[Expandable 8CH, 2K] Hiseeu Wireless Security Camera System with 1TB Hard Drive with One-Way Audio,...
  • 【Easy setup】Wireless means camera and NVR is wireless connection, camere(No battery ) and NVR still need work with power cable. The wireless video security system is easy to setup and DIY installation (need plug power supply), these WIFI cameras are paired with NVR at manufacturing site. Connect PC/TV monitor to NVR by a VGA/HDMI cable. Support connect with router by 2.4Ghz WIFI network or router by Ethernet cable. Finally power on and serve yourself with 24/7 surveillance, true plug and play.
  • 【H.265+ VIDEO COMPRESSION】Compared with H.264, H.265+ is able to double data compression ratio, while improve video quality with low bit-rate, It enables IP camera to deliver smooth HD video with low bandwidth, in turn, reducing the Network bandwidth and save up to 50% video storage space. 1Tb hard drive pre-installed support 24 hours more than 30 days reliable video recording.
  • 【Remotely Anytime and Anywhere】Wireless Surveillance Camera System Allows you to View the Live Video Remotely Anytime and Anywhere by Phone and Pad(Available for Android & IOS system). Download Free APP “EseeCloud” from Android Google Play or Apple APP Store. Register an New Account, then Add Device ID. You can View the Video by WiFi or 4G/5G Network. Windows and MAC computer software : Eseecloud.(Please Send E-mail to Hiseeu for Software)
  • 【Stunning 2K Ultra-HD video, one Way Audio】 3.0MP presents 2304*1296 Mega Pixels about 1.5 times clearer than 1080P. Camera with 3 array Infrared LED allows you to see up to 65ft night vision even in darkness. Employing IP66 Waterproof metal material housing, cameras can be used indoor and outdoor. Outdoor security camera system also allows you to see and listen to people on your property remotely.

10.Tonton 1080P Full HD Security Camera System Wireless

[3MP & 2 Way Audio] Tonton Ultra HD Security Camera System Wireless,8CH NVR Recorder with 1TB HDD...
  • 【True Plug and Play & No Need to Run Video Cables】-- No need to run cables all over your house to connect the NVR and cameras. Simply mount the cameras, true plug and play, just plug in the adapters and go. Please note that this is not battery powered cameras. Power supply still needed to power on the cameras and NVR. The camera can works as a repeater, they connect to the WiFi network created by the NVR, instead of connect to your house WiFi, and will not disturbing your regular internet speed.
  • 【8CH 3MP Expandable】: Support Up to 8pcs Cameras. Only compared with Tonton 3MP Indoor/Outdoor wireless security camera. Search ASIN Code is B07D74JSM9. Get a sharp and crystal image day or night with the Weatherproof camera's automatic IR-cut filter. Up to 100ft night vision. IP66 waterproof housing, cameras can be used indoor and outdoor.
  • 【Stunning 3MP Ultra-HD video and 2-Way Audio】:3.0MP presents 2048*1536 Mega Pixels about 1.5 times clearer than 1080P.best Infrared LED array that allow you to see up to 100ft night vision even in darkness. You can hear and talk to the guys who around the cameras. When motion is detected, you will get Mobile Notification so that you will always get notice of what’s happening.
  • 【Smart PIR Activated Floodlight 】:The Spotlight & Siren alarm on security camera is of great innovation, not just monitoring your home but proactive to defend it! Once trigger any suspicious object, it auto light-up your yard or scare off intruder, and records ultra-clarity color videos even at night
  • 【Customizable Motion Detection and 1TB HDD Included】:Be notified when there are unexpected movements. Smart notifications with image will be pushed to your smartphone via App. You won't miss any moment with remote and local playback. The 1TB Security Grade HDD designed to meet the constant, 24/7 demands of surveillance recording