Dahua has a now free app (used to be paid) called gDMSS Plus (Android) or iDMSS Plus (iOS), both of which support 2-way audio communication.
You could use wireless dome and bullet cameras for all of the cameras that don’t require audio. The fixed-lens cameras are typically available in 2.8mm or 3.6mm fixed lens options.
For the cameras with audio, 2-way audio support would be required on the camera, and those are available in the Dahua N45 series as a motorized-lens WDR bullet or its dome counterpart, either of which would need to be wired, but you can use a wireless bridge to eliminate wiring from the PoE switch to the recorder. Wired cameras typically are much more feature-rich and will have better image quality over wireless cameras.
You would connect a speaker and microphone to the camera with 2-way audio. Or you can opt for a speaker/microphone combo for easier installation. ETS makes a speaker/microphone combo, although it’s probably not the best aesthetic design. We have other options available depending on your desired finish, but the ETS runs around $129 with free shipping.
You can use wired IP cameras as wireless if you add a Point-to-Point (P2P) wireless bridge and a PoE switch, thereby eliminating the need to run cable from the camera to the recorder. If you are not planning on running cable from the PoE switch to each camera, then you should use a Point-to-Multi-Point (P2MP) solution with a PoE switch for each camera (PoE port for the camera and uplink port for the wireless radio). There would need to be line of sight (LoS) between each wireless radio.
The DVR/XVR is less expensive than an NVR, and is ideal to use since the NVR includes PoE and you shouldn’t pay for it if you don’t plan on wiring your cameras directly to the recorder.
I would recommend using junction boxes for the bullet cameras unless the wiring is going to be concealed from the indoors. Use wall mounts on dome cameras when mounting them to a vertical wall unless you are mounting from underneath an eve or soffit from a horizontal surface.
For an additional fee, we can pre-configure the wireless bridge as well as the cameras and recorder so that everything is plug-and-play and easy to install and deploy.
Dahua has more advanced cameras with advanced analytics, which they refer to as IVS. The two 4MP cameras have IVS, but the DVR is economical, so it’s only available on one channel on this particular DVR. IVS allows for setting intrusion detection zones so that a notification can be sent and/or alarm/audio file can be played if motion is detected during certain times and on certain days.
Call us Toll-Free at 1-877-DEALS-79 or 1-310-370-9500 x1 for a free security consultation, or email us at [email protected].
Raymond Shadman
Direct/SMS: 310-370-9500 x1
Skype: rshadman