Three of the six classes are limited to residential property, and they are the ones most often confused with one another because their names run together and their scopes overlap. All three are bounded by the same phrase in 28 TAC § 34.611 — single-family or two-family residences — which is narrower than the multifamily language that appears in Chapter 2’s electrician exemption. Within that boundary the three classes carry very different verbs, and one of them carries a device limit on top of the property limit.

The RESIDENTIAL FIRE ALARM SUPERINTENDENT license is the broadest of the three: 28 TAC § 34.611 issues it for planning, installing, certifying, inspecting, testing, servicing, monitoring, and maintaining fire alarm or fire detection devices and systems in single-family or two-family residences — the planning superintendent’s full verb list, confined to residential property. The RESIDENTIAL FIRE ALARM TECHNICIAN license is issued for installing, certifying, inspecting, and servicing, BUT NOT PLANNING, in those same residences; the rule states the exclusion in terms rather than leaving it to be inferred, which is unusual and useful. And the RESIDENTIAL FIRE ALARM SUPERINTENDENT SINGLE STATION license is issued for planning, installing, certifying, inspecting, testing, servicing, and maintaining single station smoke or heat detectors WHICH ARE NOT A PART OF OR CONNECTED TO ANY OTHER DETECTION DEVICE OR SYSTEM in single-family or two-family residences.

That last qualifier is the one to read twice, because it is a limit on the DEVICE rather than on the work, and it is easy to satisfy on Monday and fail on Tuesday. A single station detector is one that stands alone. The moment a detector is part of, or connected to, any other detection device or system, it is outside the single station class entirely — and the rule says “any other”, not “a control panel”. Interconnecting two detectors so that one sounds the other is a connection. The single station class is the narrowest license Texas issues in this trade, and its narrowness lives in four words about what the detector is attached to. The provision that DOES turn on a control panel is the municipal-electrician exemption in Insurance Code § 6002.155, covered in § 2.3, which permits interconnected multiple station detectors provided they are not connected to a control panel or an outside alarm. The two are not in conflict, because they answer different questions: the exemption asks whether a person needs a license at all, and the class asks what a license reaches. Both can be true on the same job.