The LG S4-Q12JARTB is a 1.5HP split air conditioner for wall mounting, with a maximum cooling capacity of 3985W. The indoor unit runs on a Dual Inverter compressor and uses R410A refrigerant. The front is a mirror finished panel in black, with the temperature shown through the panel itself.

LG S4-Q12JARTB indoor unit seen from the front left, mirror front panel, black body, air outlet louvre open and the display reading 20 — The temperature reads through the mirror surface, so there is no separate screen or lit strip on the front of the unit.

Key Features

Cooling that holds steady instead of switching on and off. The Dual Inverter compressor varies its speed to hold the room at the temperature you set, rather than running at full power and cutting out.
Enough cooling for a room, at 1.5HP. Maximum capacity is 3985W.
Air is treated as it circulates. A built in ioniser works on the air passing through the unit.
Less guesswork when something goes wrong. Smart Diagnosis lets the unit report its own condition, so a technician knows where to start.
Looks like a panel, not an appliance. The mirror front and black casing sit differently on a wall from the usual white plastic box.
Easy to check against your wall space before fitting. The indoor unit measures 914mm wide, 388mm high and 261mm deep.