This Honeywell W7220A1000 Jade Economizer Controller is a powerful product for those looking to improve the performance of their packaged/rooftop air conditioner unit. With a voltage of 24 V and a thickness of 1 inch, this economizer control works best with Honeywell HVAC systems. Its compatibility with Honeywell brand and model makes it an ideal choice for those who want to enhance the efficiency of their HVAC systems without compromising on quality.