Yes, TECHLIGHT TRANSFORMERS comply with UL 1383.  So let's look at the definition of UL 1838 to see what it says:

Scope
1.1 The requirements in this standard apply to a low-voltage landscape lighting system and components that typically consist of an isolating type power unit, wiring, and luminaire. This standard only covers equipment where the maximum output of each secondary circuit is 25 A, 15 V ac (21.2 V peak) open circuit voltage, 300 VA. The equipment is intended to be installed in accordance with the National Electrical Code, ANSI/NFPA 70.

1.2 The luminaires covered by this standard are intended for garden, walkway, patio areas, or similar outdoor locations and for certain indoor locations such as atriums and shopping malls. The power units are to be installed indoors or outdoors in accordance with the marking on the product (see 6.3).

1.3 Fluorescent and high intensity discharge lighting systems will be investigated in accordance with the applicable requirements in this standard and with the applicable requirements in the Standard for Luminaires, UL 1598, as intended.

Thanks for the question.