# Fire alarm companies in Waller, Texas

3 fire alarm companies with an active Texas SFMO Fire Alarm Certificate of Registration (ACR) have a location in Waller, Texas, as of October 24, 2026. 1 more are elsewhere in Waller County.

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

## Located in Waller

- [All-Tec Audio & Security, Inc.](https://plumbregistry.com/fire-protection/providers/all-tec-audio-security-inc/) — based in Waller, TX; fire alarm; registrations: ACR-2462; phone: 281-856-7797
- [Diverse Technologies, LLC](https://plumbregistry.com/fire-protection/providers/diverse-technologies-llc/) — based in Waller, TX; fire alarm; registrations: ACR-1751030; phone: 281-804-8302
- [Waller ISD](https://plumbregistry.com/fire-protection/providers/waller-isd/) — based in Waller, TX; fire alarm and fire extinguisher; registrations: ACR-3268878, ECR-3268873; phone: 979-451-9531

## Elsewhere in Waller County

- [Legacy Fire Solutions LLC](https://plumbregistry.com/fire-protection/providers/legacy-fire-solutions-llc/) — based in Cypress, TX; fire alarm and fire extinguisher; registrations: ACR-2826114, ECR-2909430; phone: 832-630-0856

## FAQ

**How do I check that a fire alarm company in Waller 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 Waller to work there?**

No. Texas registrations are statewide, so companies based elsewhere in Waller County or across Texas can work in Waller. 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._