Primary Systems provides comprehensive home security solutions throughout St. Louis, MO, including monitored systems, alarm response, and smart home integration.
Operator computes a Health score every night at 2 am HST. It's the one number that tells you if this shop is winning, losing, or steady. Here's how Primary Systems broke down on May 2, 2026.
Primary Systems is indexed in Operator's Homesecurity market index for St Louis, MO.
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Reviews pulled nightly from Google, Yelp, and Meta. Aggregate weighted by recency and source authority.
The Homesecurity shops Primary Systems competes with most often, ranked by Operator's health score. Tap any row for that shop's full page.
The questions people ask before they call.