Home security system with no monthly fee: best DIY picks

The GEN2 16-piece kit includes a base station with siren, door/window sensors, motion detectors and a keypad covering the primary entry points and interior zones of a standard home. All notifications are sent directly to the homeowner's phone via the app without routing through a monitoring center that charges monthly fees.

The base station has a battery backup that maintains alarm functionality during power outages. WiFi connection provides app notifications and remote arm/disarm. The system can be expanded with additional compatible sensors sold separately.

At $169 for 16 pieces, the GEN2 kit is the most cost-effective way to cover a full residential perimeter with no ongoing costs.

The 22-piece WiFi+4G system includes dual communication paths for alarm notification: WiFi as the primary and 4G cellular as the backup. When an intruder disables the router or cuts power, the 4G connection continues to send notifications via cellular network.

The included 2K camera provides visual verification of alarm events without purchasing a separate security camera. When a motion zone triggers, the camera records the event and sends a clip to the app for immediate verification.

At $159 for 22 pieces with a camera and 4G backup, this is the most complete package in this guide.

The compact WiFi alarm system provides door/window sensors, a motion detector and a base station siren in a package suited for apartments or small homes where a limited number of entry points need coverage. App push notifications alert the homeowner instantly when any sensor triggers.

The system installs without drilling or wiring using adhesive sensor mounts. Most apartment leases prohibit permanent security system installation; adhesive-mount sensors leave no marks and move with the tenant.

At $113, this is the lowest-priced complete no-subscription alarm system in this guide.

The two-way audio PoE system adds communication capability to a wired surveillance system: the camera's built-in speaker and microphone allow speaking to anyone in the camera's field of view from the smartphone app. This is useful for package deliveries, visitors at a gate or deterring activity before it escalates.

Local recording to an NVR hard drive eliminates subscription costs. The PoE wired connection provides reliable video without WiFi interference.

At $199, this camera system provides no-subscription surveillance recording with the addition of two-way audio communication, a feature absent from most budget wired camera systems.