Contractor-Grade Security: Integrated keypad lockout prevents tampering in high-traffic or rental areas

this part is the designated pressure switch for Outdoor Knight XL and Aquas OXN models ranging from 601 to 801

making it a versatile tool for HVAC automation and industrial maintenance

Technicians frequently utilize this OEM replacement part when troubleshooting drifted resistance values or failed sensors that trigger efficiency-robbing fault codes

IO Hvac Controls iO-CSRY120 Relay Kit 319852-301 Contractor-Grade Security: Integrated keypad lockoutThe iO CSRY120 is a specialized 120V relay kit engineered for seamless integration into higher voltage control circuits. As a veteran technician, you know that standard 24V thermostats aren't built to handle line voltage directly; this kit bridges that gap, allowing Temp Stat series or other low voltage controllers to safely manage 120V equipment. The relay is rated for a 15 Amp resistive load, making it ideal for fan coil units, unit heaters, and