When I bought this device in 2017, most of the functions worked. I had trouble updating the device but I managed to get it working. The battery failed in the first three months. I emailed the manufacturer 9 times and got no response. Shortly thereafter, it stopped displaying video from the cameras. I contacted the manufacturer again with no result. The only feature that worked consistently was DVM. Fiber optic skills are useless as there is no information on how to use them. It became a $600 paperweight in 2018 due to the lack of tech support. There are now many better testers on the market that are far more reliable. whistles if they don't work.
4CH 5MP Lite 5-In-1 HD Analog Hybrid DVR&NVR Supports Up To 5MP IP Camera+5MP AHD/TVI/CVI Camera And 960H Analog Camera Standalone DVR CCTV Surveillance Security System Video Recorder (No HDD)
15 Review
Tonton 3MP Ultra HD Wireless IP Network Camera With PIR Sensor, 2 Way Audio, Floodlight - Suitable For All Tonton NVR And Kits, Add-On Accessory For Enhanced Security (Black)
16 Review
Tonton 2K Wireless Security Camera System With Dual WiFi, PIR Sensor, And Color Night Vision - 8 Bullet Floodlight Cameras, 10CH 5MP NVR With 2TB HDD, 2 Way Audio
15 Review
Upgrade Your Security System With Tonton'S 3MP Ultra HD Wireless Camera Add-On With PIR Sensor, 2 Way Audio And Floodlight
14 Review
Effortlessly Navigate Your Laptop Or Desktop With The Perixx PERIPAD-501 Wired USB Touchpad
27 Review
12 Months Warranty HP ProBook 440 G2 450 G2 TPN Q139-Q143 Battery Replacement - VI04 756743-001, 756745-001, 756479-421 HSTNN-DB6K HSTNN-LB6K
38 Review
HUANUO Adjustable Laptop Stand Riser For Desk - Fits Up To 15.6 Inch Notebook, Mesh Ventilated Cooling With 8 Tilt Levels For Improved Airflow & Ergonomics
29 Review
π TalentCell PB240A1 | 24V Lithium Ion Battery with 22400mAh Capacity | Rechargeable Power Pack for LED Light Strip, CCTV Camera, Smartphone & More
26 Review