I purchased a Zumimall GX2K and F5 camera back in January ’23. With exception of the Pan/Tilt/Zoom feature of the GX2K camera, both cameras work very similar to each other, and their performance is exceptional.The F5 will send me a notification 5 seconds after detecting motion, and typically rearms for the next detection 5 -10 seconds later. I currently have my record length set to 10 seconds because of testing the reset time, but in actuality, having the record length set to 20 or 30 seconds would show better coverage when movement is being captured.Standard Definition is a bit choppy, and could be tolerated, but why would you when High Definition is an option. Selecting HD produces an extremely high quality image and recording. Both daytime color images and nighttime B&W images are phenomenal. I have attached a late afternoon daytime, and a nighttime screenshot as examples.When originally purchased, I had an issue with an extended delay time (40-45sec) between detection and notification time. Emailing tech support took care of this issue in short order. After this, tech support sent a firmware update for both cameras. If I could go back, I would not have updated the firmware. The original firmware functioned and performed better than the update. I must say tech support was and is fantastic responding to my emails, answering any questions I have, and are amazingly prompt in doing so. More companies should embrace such customer concern and care.I am only powering my F5 camera by its internal battery. This camera covers my deck and screened-in porch. Normally there is an extremely low level of activity here. My original intention was to connect a solar panel to the camera for battery maintenance. However, the camera only consumes on average 6.5% of the battery per week. This will easily provide 3 months of coverage between required charging. The camera is in an easy access location, and installing a solar panel would draw more attention to the presence of a camera, so I decided it was more prudent to periodically charge the battery myself, than risk drawing more attention to the camera.Speaking of covering my deck/porch, the deck and porch are roughly 24’ in length. Half of this length is screened-in porch. The F5 will detect motion on the deck, right through the screen. The screen does not seem to hinder detection.I tried several other cameras before discovering the Zumimall cameras. I was not satisfied with any of those predecessors. Mainly because they advertised/marketed features of their cameras that in actuality were not available for use unless you purchased their monitoring service. In my book, this is an underhanded tactic that equates to lying, and shows disrespect to potential buyers.Zumimall offers monitoring service, and AI detection monitoring, but I have not looked into these options. I utilize 64gb micro SD cards in my cameras which are more than adequate for my needs. I believe they also allow you a 7-day cloud recording offer at no cost. As I understand, it is a shorter record length (non-adjustable), but does provide you with the ability to look back through a week’s worth of recording history if desired.Finally, I would like to report on their detection ability. Zumimall mentions about an 8m detection range for these cameras. My usage has shown these cameras detect motion well beyond this range. My cameras are setup for human detection only. They easily detect people 20-30m away on a regular basis. If I turn off human only detection, they will detect motion/activity beyond 30 meters. These are my first two Zumimall cameras. This sensitivity may be unusual for these cameras, but it is what I have experienced.These are simply amazing cameras. I am one of those very picky sorts of people. I am exceptionally pleased with both of these cameras. I will be purchasing several more cameras in the future to cover other areas of my property, and I feel quite certain those will also be Zumimall cameras.