Note,
The security cameras, Robot - Bullet & Dome cameras, can be used on there own with just the mobile app, or added to a WiFi Security camera kit at a later date without the need to update or replace the camera to suit the kit, while still connecting to the mobile app.
With the option to purchase any type of the cameras seperately, & added to the kit, (maximum of 8 cameras can be connected to the kit) or used seperately with the mobile app itself.

 
See WiFi 4ch - 8 camera security camera kits on this site.
 
Wireless Camera + NVR kit
( 2 x 3MP IR cameras + 2 x dome cameras
4 x wired or 8 x wireless security camera kit with NVR
Easily installed with auto connection - recognition of cameras to NVR.
 
Infared detection on cameras - with built-in real time 2 way audio from microphone & speakers - video & white light activation on motion detection.
 
Also has area masking- specific area detection features
Free CMS software (Central Monitoring Station) & mobile app
Upto 128GB memory card storage.
Connect remotely, no matter where you are.
 
Total price
$ 748.00(includes GST & freight) for Australian Customers
 
$650.00 Plus VAT & freight for Overseas Customers