With the continuous development of the IP video surveillance market, security manufacturers constantly enrich its product line. By coincidence, we have four network cameras from different Chinese manufacturers. All of them are 1.3 megapixel outdoor IR network cameras, which dedicated to middle and low-end market. Although we have seen some test reports on camera's functionality and performance, we have not seen the internal design of these network cameras. Let’s walk you out through this detailed comparison disassemblely.

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In terms of appearance, Hikvision, Uniview and Tiandy adopt white/black style design. Uniview camera is light weight, the appearance of Hikvision and Tiandy is pretty close. Dahua camera basically keeps its conventional appearance.

Next, we began to disassemble these cameras with the order of Hikvision, Uniview, Tiandy, Dahua. Firstly let's disassemble the Hikvision camera:

Next, disassemble the Uniview Camera:

Disassemble the Tiandy IP Camera:

It's turn to disassemble Dahua IP Camera:

1# Hardware layout comparison

In normal use, a high quality security camera can use 2-3 years without any problems. But only for the pursuit of a good look, rather than on durability and reliability, likely the security cameras stop working because of unpredictable extreme weather conditions. Next, we continue disassembling these cameras to compare hardware structure, heat dissipation, circuit protection, image sensor design.

Hikvision IP camera adopts single PCB board design, with hollow layout, internal design is clean and beautiful, using rugged heavy camera housing.

Uniview adopts the unique dual-PCB boards design, difficult to assemble.

Tiandy products also adopt single-PCB board structure, layout is clean and simple.

Dahua IP camera also adopts the single-PCB board design, internal space is large, the PCB board is small, layout is compact.

Hardware layout rating:

Hikvision: ★★★★★
Uniview: ★★★
Tiandy: ★★★★★
Dahua: ★★★

2# Structure & Heat dissipation design

No heat dissipation design on Hikvision's CPU, through PCB hollow design can stop heat conveying to image sensor.

Next, the Uniview IP camera, the processor and CMOS image sensor are located to different PCB boards, ensuring CPU heat will not cause impact to the image sensor. But the structure is complex, CPU heat can't dissipate out. Additionally, the image sensor has no separate heat dissipation design.

The heat passes heat dissipation metal plate to reach camera housing, Dahua IP cameras heat dissipation design performance is ordinary. Small PCB size may cause high temperature of image sensor, indirectly has impact on imaging.

Compared the above design, Tiandy heat dissipation is simple, camera's CPU directly contact the silicone tape to provide good heat dissipation.

Heat dissipation rating:

Hikvision: ★★★★
Uniview: ★★★
Tiandy: ★★★★★
Dahua: ★★

3# Circuit Protection Design

Hikvision: after the network transformer stage uses two small transient-voltage-suppression (TVS) diodes to protect electronic circuits against transients and overvoltage threats such as EFT (electrically fast transients) and ESD (electro-static discharge). On its power input, it has a SMC package power protection device to protect post-stage circuit against lighting surge.

Uniview: after the network transformer stage uses a 6PIN chip to provide EFT and ESD protection. On its power input, it also has a SMC package surge protector design.

Tiandy: after the network transformer stage uses a SOIC 8 PIN chip to protect its network connection. On its power input it has SMC package high-power protection diode to against voltage surge.

Dahua: The same with the above cameras, Dahua IP camera also has TVS protection after the network transformer stage; the power input circuit design uses a small power rate TVS, only can be effective to the electrostatic, may not prevent the camera from damaging by lightning surges.

Circuit Protection rating:

Hikvision: ★★★★★
Uniview: ★★★★★
Tiandy: ★★★★★
Dahua: ★★★

4# CMOS Image Sensor

Hikvision: 1/3-inch ON-Semiconductor/Aptina AR0130, image quality is good.

Uniview: 1/3-inch ON-Semiconductor/Aptina AR0130, image quality is good.

Tiandy: 1/3-inch SONY IMX225, delivers the best image quality under low light conditions.

Dahua: 1/3-inch OmniVision OV9756, sensor package is small, core temperature is high.

Sensor's low light performance rating:

Hikvision: ★★★★
Uniview: ★★★★
Tiandy: ★★★★★
Dahua: ★★★

The Hikvision camera does not have many spare parts, but many screws, disassembling is easy.

Uniview uses torx screws, structure is complex.

Tiandy cameras have few spare parts, easy to assemble.

The Dahua IP camera has few spare parts, however it's not easy to disassemble.

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The email came from the boss.

We’re watching you, it told Axos Financial Inc. employees working from home. We’re capturing your keystrokes. We’re logging the websites you visit. Every 10 minutes or so, we’re taking a screen shot.

So get to work — or face the consequences.

“We have seen individuals taking unfair advantage of flexible work arrangements” by essentially taking vacations, Gregory Garrabrants, the online bank’s chief executive officer, wrote in the March 16 message reviewed by Bloomberg News. If daily tasks aren’t completed, workers “will be subject to disciplinary action, up to and including termination.”

Straight-up Big Brother, perhaps, but it’s perfectly legal for businesses to keep an unblinking eye on employees as long as they disclose they’re doing it. Of course, digital surveillance has been used for years on office desktops, yet it seems a violation of privacy to a lot of workers when they’re required to have software on their computers that tracks their every move in their own homes.

Workers at various companies have complained of excesses, but many of them are new to telecommuting, with its temptations of a midday nap or the demands of children out of school. Employers justify going full Orwell by saying that monitoring curbs security breaches, which can be expensive, and helps keep the wheels of commerce turning.

With so many people working remotely because of the coronavirus, surveillance software is flying off the virtual shelves.

Unit Camera

“Companies have been scrambling,” said Brad Miller, CEO of surveillance-software maker InterGuard. “They’re trying to allow their employees to work from home but trying to maintain a level of security and productivity.”

Axos spokesman Gregory Frost said in a statement that “the enhanced monitoring of at-home employees we implemented will ensure that those members of our workforce who work from home will continue” to meet quality and productivity standards that are expected from all workers.

Frost declined to comment on whether Garrabrants, one of America’s top-paid bank CEOs in 2018, is subject to the same monitoring when he works from home.

Along with InterGuard, software makers include Time Doctor, Teramind, VeriClock, innerActiv, ActivTrak and Hubstaff. All provide a combination of screen monitoring and productivity metrics, such as number of emails sent, to reassure managers that their charges are doing their jobs.

ActivTrak’s inbound requests have tripled in recent we

Unis Cameras