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The IO HVAC CONTROLS AC-SOS-4-LV is a wireless air conditioning shut off switch designed for line voltage applications in mini split systems. It provides automatic or remote disconnection of AC equipment when triggered by a door or window contact, helping to prevent energy waste when conditioned spaces are open to the outside. The unit supports up to four door or window sensor zones and is built for line voltage wiring configurations. Licensed HVAC technicians and electricians install this device as part of an energy management or occupancy-control strategy in residential and light commercial settings.
The AC-SOS-4-LV is suited for mini split installations where line voltage control is required and where up to four entry points need monitoring. Typical applications include hotel rooms, offices, apartments, and similar spaces where open-door operation of HVAC equipment is a known efficiency problem. The wireless architecture eliminates the need to run additional low-voltage sensor wiring across door frames or walls, simplifying installation in retrofit and new-construction projects alike.
Designed as an OEM-style line voltage wireless shut off switch for mini split AC systems requiring door or window contact control across up to four zones.
Installation should be performed by a licensed HVAC technician or electrician in accordance with applicable NEC requirements. Disconnect and lock out all line voltage power to the mini split system before wiring the shut off switch. Verify sensor pairing and zone assignments before restoring power and confirming operation. Do not exceed the rated voltage or zone capacity of the device.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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