# Fire alarm companies in Leander, Texas 3 fire alarm companies with an active Texas SFMO Fire Alarm Certificate of Registration (ACR) have a location in Leander, Texas, as of October 24, 2026. 26 more are elsewhere in Williamson County. Sale, installation, inspection, testing, monitoring and service of fire alarm and detection systems. ## Located in Leander - [Capitol Sprinkler & Fire Systems LLC](https://plumbregistry.com/fire-protection/providers/capitol-sprinkler-fire-systems-llc/) — based in Leander, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-2209401, ECR-2383883, SCR-G-2209659; phone: 512-777-8903 - [Hercules Systems Texas LLC](https://plumbregistry.com/fire-protection/providers/hercules-systems-texas-llc/) — based in Leander, TX; fire alarm; registrations: ACR-3233029; phone: 254-421-3248 - [Jason Anthony McGuire](https://plumbregistry.com/fire-protection/providers/jason-anthony-mcguire/) — based in Leander, TX; fire alarm; registrations: ACR-3524285; phone: 512-454-1005 ## Elsewhere in Williamson County - [1st Fire Safety LLC](https://plumbregistry.com/fire-protection/providers/1st-fire-safety-llc/) — based in Cedar Park, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-2375658, ECR-1953562, HCR-2543640, SCR-G-2552995; phone: 512-777-1555 - [All Secure Alarm Systems](https://plumbregistry.com/fire-protection/providers/all-secure-alarm-systems/) — based in Georgetown, TX; fire alarm; registrations: ACR-2389; phone: 512-868-8062 - [Alliance Safety And Fire Protection, LP](https://plumbregistry.com/fire-protection/providers/alliance-safety-and-fire-protection-lp/) — based in Round Rock, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-2630, ECR-1775, SCR-G-1721736; phone: 512-966-4488 - [American Fire Protection Group Inc](https://plumbregistry.com/fire-protection/providers/american-fire-protection-group-inc/) — based in Dallas, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-1789337, ECR-1733854, HCR-2084804, SCR-G-1734091; phone: 952-641-7623 - [APi Group Life Safety USA LLC](https://plumbregistry.com/fire-protection/providers/api-group-life-safety-usa-llc/) — based in Houston, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-1354, ACR-2562678, ECR-1751311, SCR-G-0107, SCR-G-0152, SCR-G-2161248; phone: 651-604-2794 - [ARK Security LLC](https://plumbregistry.com/fire-protection/providers/ark-security-llc/) — based in Liberty Hill, TX; fire alarm; registrations: ACR-1929776; phone: 512-350-0018 - [ATX Fire & Life Safety LLC](https://plumbregistry.com/fire-protection/providers/atx-fire-life-safety-llc/) — based in Georgetown, TX; fire alarm; registrations: ACR-2010065; phone: 512-630-6930 - [Austin Home Theater & Security LLC](https://plumbregistry.com/fire-protection/providers/austin-home-theater-security-llc/) — based in Cedar Park, TX; fire alarm; registrations: ACR-1750972; phone: 512-923-1540 - [Austin Premier Fire Protection Inc](https://plumbregistry.com/fire-protection/providers/austin-premier-fire-protection-inc/) — based in Hutto, TX; fire alarm; registrations: ACR-2351381; phone: 512-848-1446 - [Avenger Security Services Inc](https://plumbregistry.com/fire-protection/providers/avenger-security-services-inc/) — based in Hutto, TX; fire alarm; registrations: ACR-2370373; phone: 512-563-5361 - [Battalion Fire Protection LLC](https://plumbregistry.com/fire-protection/providers/battalion-fire-protection-llc/) — based in Georgetown, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-3238624, ECR-3238657, SCR-G-3238626; phone: 713-306-6296 - [Blue Line Security Inc](https://plumbregistry.com/fire-protection/providers/blue-line-security-inc/) — based in Round Rock, TX; fire alarm; registrations: ACR-2182650; phone: 512-522-5805 - [Control Systems Inc](https://plumbregistry.com/fire-protection/providers/control-systems-inc/) — based in Arlington, TX; fire alarm; registrations: ACR-2866302; phone: 909-628-7773 - [DT Security LLC](https://plumbregistry.com/fire-protection/providers/dt-security-llc/) — based in Round Rock, TX; fire alarm; registrations: ACR-2289434; phone: 512-962-7808 - [Facilities Protection Systems](https://plumbregistry.com/fire-protection/providers/facilities-protection-systems/) — based in Brea, CA; fire alarm and fire extinguisher; registrations: ACR-2907001, ECR-2914921; phone: 714-257-2244 - [Fire Alarm Control Professionals LLC](https://plumbregistry.com/fire-protection/providers/fire-alarm-control-professionals-llc/) — based in Austin, TX; fire alarm; registrations: ACR-2944787; phone: 512-844-0763 - [Firetron, Inc.](https://plumbregistry.com/fire-protection/providers/firetron-inc/) — based in Stafford, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-1136, ECR-1751245, HCR-384, SCR-G-1004; phone: 281-499-1500 - [Icon Fire & Life Safety LLC](https://plumbregistry.com/fire-protection/providers/icon-fire-life-safety-llc/) — based in Taylor, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-3163034, ECR-3275171, SCR-G-3323807; phone: 512-576-5595 - [Impact Fire Services LLC](https://plumbregistry.com/fire-protection/providers/impact-fire-services-llc/) — based in Houston, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-1751050, ECR-1751722, SCR-G-1098; phone: 512-640-1536 - [Master Burglar Alarm Company](https://plumbregistry.com/fire-protection/providers/master-burglar-alarm-company/) — based in Round Rock, TX; fire alarm; registrations: ACR-1750519; phone: 512-452-8589 - [Maxcom Securities, Inc.](https://plumbregistry.com/fire-protection/providers/maxcom-securities-inc/) — based in Georgetown, TX; fire alarm; registrations: ACR-2595; phone: 512-868-5566 - [Modular Fire Protection LLC](https://plumbregistry.com/fire-protection/providers/modular-fire-protection-llc/) — based in Georgetown, TX; fire alarm; registrations: ACR-3118547; phone: 615-630-3553 - [Primary Fire Protection, Inc](https://plumbregistry.com/fire-protection/providers/primary-fire-protection-inc/) — based in Pflugerville, TX; fire alarm and fire extinguisher; registrations: ACR-2697739, ECR-3186779; phone: 737-234-6655 - [Pye-Barker Fire & Safety LLC](https://plumbregistry.com/fire-protection/providers/pye-barker-fire-safety-llc/) — based in Waco, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-2326761, ECR-2329916, HCR-2337459, SCR-G-2329912; phone: 806-777-3661 - [Round Rock Independent School District](https://plumbregistry.com/fire-protection/providers/round-rock-independent-school-district/) — based in Round Rock, TX; fire alarm; registrations: ACR-2511; phone: 512-464-8340 - [Wild Fire Life Safety Services LLC](https://plumbregistry.com/fire-protection/providers/wild-fire-life-safety-services-llc/) — based in Round Rock, TX; fire alarm, fire extinguisher and fire sprinkler; registrations: ACR-3128353, ECR-3130444, SCR-G-3554814; phone: 512-964-4126 ## FAQ **How do I check that a fire alarm company in Leander 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 Leander to work there?** No. Texas registrations are statewide, so companies based elsewhere in Williamson County or across Texas can work in Leander. 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._