Ajax StreetSiren DoubleDeck - OFFER PRICE
- 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 and frame rate settings. 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.
|
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 a minimum of 2 Terabytes per 4 x 2-4MP HD cameras, as this should give you 2 weeks to a month with a few adjustments on motion detected recording. You may only require the full 25 frames per second on certain cameras if things are fast moving.
(All of our hard drives come fitted and are CCTV specific from one of the major brands)
Wireless outdoor siren with a clip lock for a branded faceplate.
Free promotion of security services
Security service providers can print their logo and contact information on the front panel of an outdoor siren. Located at the building, it will serve as an additional marketing channel that reaches new customers: neighbors and visitors.
To attract attention
StreetSiren DoubleDeck needs less than a second to activate a powerful siren and bright LED indicators in response to an alarm signal. Any break-in will be immediately exposed.
To indicate the system state
LED indication and short beeps of the buzzer remind users that premises are armed and delay when entering feature is active. The risk of a false alarm becomes significantly lower.
Right protection for every setting
StreetSiren DoubleDeck is flexible when it comes to settings which makes it as relevant in a quiet gated community as in a loud industrial area. The buzzer can be set to generate sound from 85 to 113 dB for an adjustable period: 3 to 180 seconds. Or it can be completely silent when the device is set to respond to alarm triggerings only with LED indication. The Ajax app allows engineers to choose detectors that activate the siren. It helps to prevent awkward situations when neighbors are notified every time that a washing machine leaks.
Weatherproof
StreetSiren DoubleDeck is resistant to heat, cold, and rapid changes in temperature. Its hermetically sealed body has been rated IP54 level of ingress protection. The outdoor siren is ready to withstand exposure to rains or snowfalls and can be installed on the exterior walls without a canopy.
Reacts to alarms in a split second
We have developed the Jeweller radio protocol to ensure the uninterrupted operation of all devices within the security system. The Jeweller uses time frames to synchronize communication of connected devices, authentication to eliminate forgery, and encryption to protect against data leaks. Moreover, it allows devices to operate for years from pre-installed batteries. Thanks to Jeweller, StreetSiren DoubleDeck can respond to detector alarms in 0,3 seconds, even when hub is offline.
Protected from vandals
2.5 meters is an optimal height for installing an outdoor siren. It improves visibility, audibility, and makes the device less accessible to intruders. Still, if someone will try to tear the siren off, the accelerator will trigger an alarm. In any case, alarm monitoring company and users will be notified about sabotage, and vandals will be deterred by a loud sound of the buzzer.
Effortless maintenance
Outdoor siren operates for 5 years on the pre-installed batteries and features external power terminals. Whether to use batteries as a primary power supply or a backup one is your choice. In any case, the system will notify you about the need for maintenance when the battery level will drain to 20%.
Installation without pitfalls
StreetSiren DoubleDeck was specifically designed to save engineers time on installation. QR-code helps to quickly add to the system. Configurations and tests are available in the app, all the time. Thanks to SmartBracket and pre-installed batteries the device doesn’t need to be disassembled before mounting. Brandplate can be adjusted quickly using a clip lock. To fix it extra firmly engineers can use a screw
