What is this thing ??

Hello.
Hope you see the same page am seeing from the link below, as AliExpress is always playing misleading tricks.
What does it do for $6 ?
----> https://www.aliexpress.us/item/3256806087404944.html?spm=a2g0o.productlist.main.17.72905feezkwz6i&algo_pvid=85bf1d24-ae84-4896-9337-25c58878f64d&aem_p4p_detail=202403010851471321379303741110001461179&algo_exp_id=85bf1d24-ae84-4896-9337-25c58878f64d-8&pdp_npi=4@dis!USD!6.43!6.12!!!46.12!43.91!@2101fb0e17093119072181853e22c3!12000037054284232!sea!US!171220328!&curPageLogUid=DhVAAp7g3OoP&utparam-url=scene:search|query_from:&search_p4p_id=202403010851471321379303741110001461179_9

Well, I better attach a screen print just in case :

See the fifth picture across the bottom. It's some kind of inverter for a motor.

It's a "Variable frequency drive" - a speed controller for three phase AC motors.

An inverter with AC in and three phase variable voltage & frequency AC out.

(The very first one we used, decades ago, cost around £5000 for a 6KW one; it was massive!)

hahaha If it sounds too good to be true, it is.

The listing is for inverters of various powers and colours, and for a remote control panel which could well be useful in some applications.

The remote control panel seems to have dropped to less than £1. It is just the remote control panel.

The inverters themselves are around £40 which is still cheap but believable.

Like rjenkinsgb, I remember paying over £1000 for a 1.5 kW inverter a long time ago, and £80 for a 3 kW inverter in the last few years.