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Depending on your location, a license may be required to be 'legal'. Here is a good list of for the USA: Low Voltage State Licensing Requirements It is pretty involved to install alarm systems as it's not as simple to program. Most installers use Honeywell, GE, or Elk systems. You also have...

You could do the same or use boxes and conduit.

I started a company late last year focusing on mainly camera installations, wireless networking, and other low voltage installs. I am particularly interested in terms & conditions when quoting and billing customers. Is there a specific type of lawyer that deals with this? I want to spell out...

Ha! I've always thought about taking a fresh 1000' box of CAT6, terminating both ends and testing it. I love Ubiquiti! What Ubiquiti equipment are you using with 14 cameras and how much throughput are you getting? I would guess with 3mp cameras at full resolution and 15fps would yield about...

Well, this was a much larger battery backup than i had originally asked about. I have a similar battery backup to test with a 4 camera system later this week.

So I have an install tomorrow for a customer that includes 8 3MP dome cameras (5w max each) and an 8 channel NVR w/ 8 POE ports. I hooked everything up to a UPS rated at 1500VA / 865 watts. (Looks like it has 2 9ah batteries.) Running with the IR leds on and recording motion it never peaked...

They aren't accessories from Dahua. Dahua makes them in different models with different lenses. Sort of like cars with different size motors (V6 or V8). While you can buy a V8 and install it in the V6 it's not cost effective. That said, you can get lenses from http://www.m12lenses.com/ Don't...

Just wanted to comment on the HDW4300C vs the HDW1320S. A vendor on Aliexpress informed me that the 1320S is the newer model that will continue to have future support (firmware upgrades?) whereas the 4300C will not. I believe I also read somewhere that the 4300C was being illegally copied so...

Yeah. I have a few rack mount UPSs that run servers and equipment at my house. I'm about due for a changeout with those. :( $$$

I guess my confusion is based on watts listed by the devices and voltage. They list at 5w 12v. So how does this convert to what the draw is on the 120v the UPS is supplying? I used APC's calculator and it said a 550va 330w UPS with a 7ah 12v battery would last 95 minutes when I input 38w in to...

Wow. I was hoping for a bit more than that. I guess I will need to do some real world testing. Thanks for your help!

If it lists the Volt-Amp-Hour rating at 84 I assume it is a 7Ah 12v battery.

I'm a bit scatter brained today and I am trying to figure out how to calculate the run time of a battery back up for a 4 camera system including the NVR and cameras only. The cameras are listed as 5w max (qty. 4) and the NVR is listed as 12w (without HDD). Assuming the HDD uses 6w this should...

I have been using my mobile phone with an app to aim them, but just recently encountered an issue where the client was not available, and I could not access the wifi network. I had to go up and down a 30' ladder and then up to the 2nd floor to view the monitor at the NVR. This wasted a lot of...

Has anyone used one that they like? I purchased http://www.amazon.com/gp/product/B00X54J6XU?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00 but it has an issue where the battery will not charge and after playing with it for an hour I noticed the screen started getting glitchy when brightness...