| There are various kinds of Security Systems with | | | | move the camera remotely, you'll need a pan/tilt/zoom |
| kinds of functions in the online stores, however, which | | | | (PTZ) camera. On the other side, the price is much |
| one is best for you? Before your decision, ask yourself | | | | higher than the standard ones. |
| for several questions. | | | | 4. How much details of the camera image? |
| For Camera: | | | | Of cos, the resolutions of the cameras are very |
| 1. Where are you going to mount the camera? | | | | important too. Generally speaking, 380TVL is low-end, |
| Then the answer can help you decide to choose how | | | | 420TVL/480TVL is good for security work, 540TVL |
| many home dome cameras and how many outdoor | | | | is very high quality. If you're going to want to see detail, |
| bullet &weatherproof cameras. | | | | upgrading to a higher resolution is a good choice. |
| 2. How long is the visible and night vision distance? | | | | For Digital Video Recorder: |
| Usually, the visible distance of cameras can be up to | | | | 1. How many locations do you want to watch? |
| 50', 80', 135', etc. Take a look the IR Night Vision as 1/3" | | | | This also helps you to decide how many cameras and |
| CCD for an instance: | | | | what kind of cameras will you choose. There are |
| 1) 1/3" CCD & 3.6mm lens camera ( 15m IR night vision) | | | | usually 4 channel, 8 channel, 16 channel, and 32 channel. |
| 2) 1/3" CCD & 6mm lens camera ( 20m IR night vision) | | | | 2. Does remote access need or just for local |
| 3) 1/3" CCD & 8mm lens camera ( 25m-30m IR night | | | | monitoring? |
| vision) | | | | The MPEG4 & H.264 are the two mainly popular video |
| 4) 1/3" CCD & 12mm lens camera ( 40m-60m IR night | | | | compression formats for digital video recorders. |
| vision) | | | | However, you need to make clear the difference of |
| 5) 1/3" CCD & 25mm lens camera ( 100m-120m IR | | | | these two formats: MPEG4 (good for local storage) |
| night vision) | | | | V.S. H.264 (Network transmission, remote access |
| 3. How much the viewing angle? | | | | needed). However, personally, I recommend on H.264, |
| Most video surveillance cameras are installed in one | | | | which is widely used with remote access control. |
| location permanently. For this case, fixed-focus lenses | | | | 3. How long do you need to save your recordings for? |
| are the most cost-effective. If you want to be able to | | | | 500GB and 1 TB are hard drives are usually installed in |
| move your camera, variable focus lenses are | | | | the DVRs. Generally speaking, 500GB HDD is enough |
| adjustable, letting you change your field of view when | | | | for your home and small business. |
| you adjust the camera. If you want to be able to | | | | |