Reconditioned Suzuki Alto HA36S Engine Control Unit (ECU). It is reconditioned: a used original part taken from a vehicle, not a new replacement.
Model codes matter more than model names: the same Alto is built in several generations with different codes, and parts often differ between them. Check that your vehicle's code is HA36S — it is the start of the chassis (frame) number on the registration document.
Electronic units are often matched by part number — compare the number printed on your existing unit with the one in the photos before you buy.
One unit is in stock at Sakura Auto Parts, Depanama, Pannipitiya. Prices follow the market — ask the seller for today's price; quotes are free. Quote part ID 105838 (part number 33910-74P2) when you contact the seller.