Voice Off Loudspeaker with amplifier VOX400
- CCTV Lens Guide
- Hard Drive Size Guide
Unless selecting a vari-focal camera (with an adjustable lens) It is important to select the correct camera lens option for where the camera is to be positioned. A smaller lens will give you a wider angle but will be "zoomed out more", while a bigger lens will narrow the angle down and "zoom in more". See below to give you some idea on angles of Megapixel HD Cameras:
Lens in mm | Approx Viewing Angle (degrees) | Ideal Distance (metres) | Typical usage/notes |
---|---|---|---|
2.8 | 106 | <6 | For seeing as much of the immediate area as possible such as above a doorway/low down/garage soffits (edges can appear slightly warped/distorted) - clearly "zoomed out" |
3.6/4 | 83-90 | <12 | A great general purpose option giving great coverage still in the corner of a room or higher up on second floor soffits with less distortion - more of a natural "zoom" |
6 | 56 | 6-20 | Narrows down the angle and zooms in to look past the immediate area a little to gain more detail - down a driveway for example from higher up |
12 | 24 | 20+ | Zooms in significantly more to look at a gate, entrance or adjascent building |
16 | 19 | 24+ | As above but more so |
The amount of hard drive space you require is dictated by how many cameras, as well as their resolution, frame rate settings, and whether you have H.265 encoding enabled or not to save space (We advise turning it on to double the capacity shown below with ease).
Finally, you can often make your storage space last a lot longer by enabling motion-detected recording rather than continuous, especially if there are long periods of no activity (to perhaps double or more these figures again).
Resolution (Megapixels) |
Days of storage provided by 1TB per camera (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (50% motion- 15 frames per second) |
---|---|---|---|
1 | 44 | 11 | 36 |
2 | 22 | 5 | 18 |
3 | 17 | 4 | 14 |
4 | 11 | 3 | 9 |
5 | 9 | 2 | 8 |
6 | 8 | 2 | 6 |
8 (4K) | 5 | 1 | 4 |
12 | 4 | 0.5 | 3 |
As a rule of thumb, we recommend 2 Terabytes for a 4 x 4/5MP HD camera setup, as this should give you approx 2 weeks using H.265 @ 20fps and that is on continuous, not motion-detected recording.
(You may only require the full 25 frames per second on certain cameras if things are fast-moving - ie above a till)
You can also use the Hikvision online calculator to work out what works best for you specifically: https://tools.hikvision.com/ca...
(All of our hard drives come fitted and are CCTV-specific from one of the major brands)
VoiceOff is an affordable, professional hardware solution to play messages or sounds to welcome, warn or inform people.
It can be triggered to play one of its on-board MP3 sound files using a hard-wired trigger such as a door contact or PIR, by software, using its new network connection or via its RS485 input by interfacing it with an access control system.
The sound files are stored inside the VOX400 on a microSD card in MP3 format and the local file storage means messages are played instantly without any network delay. These sound files can be messages, alarm sounds, music or a mixture of all of them. You then can trigger the VoiceOFF to play the appropriate message or sound depending on your application, it can store and play 10K individual sound files making it more than capable of the most demanding installs.
A shop might use the VOX400 for example to play a welcome and special offer messages, an industrial unit may have a VOX400 in a yard area warning off intruders at night by saying
"This area is protected by CCTV".
A hospital might use it to play informative messages like
"Now please wash your hands"
Many end-users and installers have there own applications such as playing "doors now closing", "alarm now setting" etc. The VOX400 is an extremely flexible product for the professional installer.
The VoiceOFF has voltage free contacts that change over whenever it plays a message. You can use these contacts by a suitable interface to control lights, access or CCTV equipment. The latest VOX400 model can be triggered and controlled with software so you can even trigger the relays remotely!
Housed in an IP65 case, it can be used either outside or inside and its built it Stereo Amp delivers 10W per channel with an adjustable volume control both on the PCB and in the free VoxPlayer Lite software bundled with the product. The VOX400 has only one speaker leaving its second 10W channel available to drive a slave speaker unit the VOX120.
The FREE software VoxPlayer Lite allows a user to select a message and then trigger the VOX400 to play it remotely via a network connection. You can also adjust the volume of the unit remotely using the software. The VoxPlayer Lite software is downloaded from a link supplied with each VOX400.
VoxPlayer Pro
For more demanding applications we have also written VoxPlayer Pro which can control and schedule messages to be played from up to 20 different VoiceOFFs all controlled and managed independently. This is a perfect solution for playing various messages in-store in shops at times and frequencies to suit the environment. For example you could play special offer messages throughout the day and messages to say the store is closing in 10 minutes at the end of the day.
The VoxPlayer Pro software has a great pedigree and is our upgraded version of our scheduler software that has been used in bus depots to inform the public of messages relating to the station and also in retail parks such as Meadowhall informing the public with messages relating to the site.
VoxPlayer OEM
As we write our own software if you require custom features and applications these can be added in to our software at a cost. To do this we will need written details of your request and then would quote for the work, a non-refundable deposit would be taken.
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