The 50W constant-current round driver is built for demanding projects where reliability matters. One DIP switch spans 600–1750mA over 3–42V, consolidating driver stock across fixture types. The 120–277VAC input, PF correction, and up to 80% efficiency trim operating costs, while over-temperature and short-circuit protection prevent callbacks. Silent convection cooling in a compact plastic shell rated for dry and damp locations. 7-year warranty.
Specification

Mechanical Specification

| American wire gauge | |
| CO4C | |
| Input wire | Black(L) White(N) (2*18AWG) |
| Output wire | Red(V+) Black(V-) (2*22AWG) |
Dimming Operation
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Built for higher-power LED loads, the 40W constant-current round driver outputs a DIP-switch adjustable 400 to 1400mA across 3–42V — one unit covering long strip runs and high-output modules. Its 120–277VAC input with PF correction and up to 80% efficiency stays cool under load, while short-circuit and over-temperature protection add safety. Silent fanless convection cooling and a compact plastic shell rated for dry and damp locations make it ideal for demanding residential and commercial installs. Non-dimming, 7-year warranty.
Model: SMT-R0401A4-CW-P Input Voltage: 100-277Vac
Dimming Mode: Non dimmable
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