# Fire alarm companies in Brownsville, Texas

2 fire alarm companies with an active Texas SFMO Fire Alarm Certificate of Registration (ACR) have a location in Brownsville, Texas, as of October 24, 2026. 7 more are elsewhere in Cameron County.

Sale, installation, inspection, testing, monitoring and service of fire alarm and detection systems.

## Located in Brownsville

- [American Surveillance Co Inc](https://plumbregistry.com/fire-protection/providers/american-surveillance-co-inc/) — based in Brownsville, TX; fire alarm; registrations: ACR-1973895; phone: 956-504-5656
- [Otso, Inc.](https://plumbregistry.com/fire-protection/providers/otso-inc/) — based in Brownsville, TX; fire alarm; registrations: ACR-2815; phone: 956-544-4726

## Elsewhere in Cameron County

- [Lee J Gonzalez](https://plumbregistry.com/fire-protection/providers/lee-j-gonzalez/) — based in San Benito, TX; fire alarm and fire extinguisher; registrations: ACR-2500124, ECR-3157221; phone: 956-244-2166
- [Optimum SFS LLC](https://plumbregistry.com/fire-protection/providers/optimum-sfs-llc/) — based in La Feria, TX; fire alarm; registrations: ACR-3069; phone: 956-797-9067
- [RGV Fire Safety/Security LLC](https://plumbregistry.com/fire-protection/providers/rgv-fire-safety-security-llc/) — based in Santa Rosa, TX; fire alarm; registrations: ACR-2163033; phone: 956-633-0803
- [SLW Group LLC](https://plumbregistry.com/fire-protection/providers/slw-group-llc/) — based in Harlingen, TX; fire alarm; registrations: ACR-3179179; phone: 956-421-2322
- [South Texas Fire Alarm & Security Services](https://plumbregistry.com/fire-protection/providers/south-texas-fire-alarm-security-services/) — based in San Benito, TX; fire alarm; registrations: ACR-1841298; phone: 956-492-5492
- [Texas State Alarm LLC](https://plumbregistry.com/fire-protection/providers/texas-state-alarm-llc/) — based in La Feria, TX; fire alarm; registrations: ACR-2409533; phone: 956-622-4455
- [Xtreme Security & Fire](https://plumbregistry.com/fire-protection/providers/xtreme-security-fire/) — based in Olmito, TX; fire alarm; registrations: ACR-1837520; phone: 956-592-0441

## FAQ

**How do I check that a fire alarm company in Brownsville is licensed?**

Search the company name or registration number in the Texas State Fire Marshal's Office public lookup (https://appscenter.tdi.texas.gov/reports/p/sfmo). Every company listed here shows its registration numbers and expiration dates, re-checked against state records on each data refresh.

**What license does a fire alarm company need in Texas?**

Companies doing this work must hold a Texas SFMO Fire Alarm Certificate of Registration (ACR). Texas requires a State Fire Marshal's Office certificate of registration for each type of work: fire alarm (ACR), fire extinguisher (ECR) and fire sprinkler (SCR). Individual technicians must also hold SFMO licenses.

**Does a company need to be located in Brownsville to work there?**

No. Texas registrations are statewide, so companies based elsewhere in Cameron County or across Texas can work in Brownsville. Confirm the service area with the company.

_Source: Texas Department of Insurance, State Fire Marshal's Office licensee records (https://appscenter.tdi.texas.gov/reports/p/sfmo), retrieved October 24, 2026. Published by Plumb Registry._