The top two photos show two different units. Whats up with that?

Not sure why it's listed like that but the unit I received is the one with the orange power button.

Is this unit UL listed?

No, I looked at my unit and did not see any indication that this device is UL certified.

Do you have a wiring schematic of this exact unit?

User's manual details individual, serial and parallel operation, and 5v supply. No internal info, or schematics, comes with the unit.

Why 2 switches for independent/series/parallel. How can one channel be in series with the other, but not visa versa?

There's 3 settings. Independent, series, and parallel. They used two switches in three positions (both up, both down, one up) to set the mode. They could have used a three position switch instead.

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⚡ Power your innovation with precision and triple the output!

DUAL MODE FLEXIBILITY - Switch effortlessly between constant voltage and constant current modes to match any project requirement.
ROBUST RELIABLE BUILD - Heavy-duty 300W linear power supply designed for professional-grade performance and long-term durability.
SMART THERMAL MANAGEMENT - Built-in thermo-sensor triggers the cooling fan automatically, keeping your setup cool under pressure.
TRIPLE OUTPUT POWER MASTERY - Simultaneously power multiple devices with 3 independent 0-30V, 0-5A outputs—perfect for multitasking pros.
PRECISION AT YOUR FINGERTIPS - Back-lit LCD with 0.1V and 0.01A resolution ensures exact voltage and current control for flawless testing.

The Tekpower TP3005D-3 is a high-precision, triple-output linear DC power supply delivering up to 30 volts and 5 amps per channel. Featuring dual operational modes, an auto-activated cooling fan, and a sharp back-lit LCD display with fine voltage and current resolution, it’s engineered for professionals demanding reliable, multitasking power solutions.

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Brand	Tekpower
Product Dimensions	36 x 16.5 x 26.5 cm; 9.93 kg
Item model number	TP-3005D-3
Manufacturer	Tekpower
Series	FBA_TP-3005D-3
Form Factor	ATX
Wattage	300 watts
Are Batteries Included	No
Item Weight	9.93 kg
Guaranteed software updates until	unknown

TekpowerTP3005D-3 Digital Variable Triple Outputs Linear-type DC Power Supply 0-30 Volts @ 0-5 Amps

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