Security Alarm Network connects cameras, motion sensors and laser tripwires to doors and sirens. Each device needs a working connection to the controller.

Disabling a relay disconnects the devices behind it. A backup route can restore those connections. Turning off a siren stops its output, while a disconnected door follows its configured fallback behavior.

How it works

Cameras check their field of view and line of sight. Motion sensors react to moving targets, and laser tripwires detect targets crossing the beam. Obstacles can block detection.

When a sensor reports an intrusion, the network raises an alarm, closes connected doors and activates sirens. The alarm remains active until reset or disarmed.

Features

• Connected device network with branch isolation and backup routes.
• Separate enabled, power and damage states for each device.
• Adjustable sensor ranges, detection delays and collision layers.
• Camera sweep, visible laser beams and sensor coverage displays.
• Sliding doors with FailOpen, FailClosed and HoldLast settings.
• Sirens with sound, flashing lights and rotating reflectors.
• C# methods and UnityEvents for integration with your game.

Included

• Seven device types: controller, relay, camera, motion sensor, laser tripwire, door and siren.
• Ten configured prefabs, including a connected network, facility and demo intruder.
• Eight model prefabs with OBJ/MTL files.
• White and blue materials.
• An interactive demo with device controls, an intruder route and an event log.
• A separate model gallery scene.
• Looping siren audio.
• Editable C# source, English PDF guide and API reference.
• Edit Mode and Play Mode tests.

Try the demo

Send the intruder through the facility to trigger an alarm. Reset the system, disable Relay A and watch the connected sensors go offline. Connect the backup route to restore them.

Use the supplied network prefab as a starting point, or place individual devices and create your own connections. The system suits security areas in stealth, heist, horror and exploration games.

Requirements

• Unity 2022.3 LTS.
• Built-in Render Pipeline.
• Unity UI for the demo.
• Active Input Handling set to Input Manager (Old) or Both for demo controls.

URP and HDRP materials are not included. The network handles connections between devices within a scene; multiplayer synchronization is not included. The demo intruder follows a scripted route.