azriod 0 Posted September 19, 2016 Hi. Im newbie here, want ask 1 question. My customer already installed alarm and outdoor siren at their house. If im using dahua dvr which have alarm out,can i sharing with the current alarm outdoor siren together with dvr ? Share this post Link to post Share on other sites
rossko 0 Posted September 19, 2016 Find out about the alarm system configuration. Many can accept an input (from the DVR contacts in this case) on a spare zone, and either sound the alarm only if set, sound the alarm 24hrs (regardless if set or not), or do something else. It's likely to be more flexible and more under the users control than hard-wiring directly to a siren. Share this post Link to post Share on other sites
