Air compressor pressure control switch with gauge — automatic load/unload control, 0–180 PSI gauge, adjustable 90/120 PSI cut-in/cut-out, brass coupler Key benefits Precise automatic control: Automatically starts and stops the compressor at set pressures to protect equipment and maintain steady output without constant manual monitoring. Wide visible range: Built-in pressure gauge displays 0–180 PSI so you can quickly verify system pressure and performance. Adjustable cut-in/cut-out: Factory default 90 PSI open (cut-in) and 120 PSI cut-out; settings are adjustable to match your system requirements. Durable service components: Rugged construction and an adjustable brass coupler for reliable, corrosion-resistant air connection and long-term use. Easy to use and install: Clear red switch knob for straightforward on/off and automatic load/unload operation; designed for quick installation and removal. Key specifications Gauge range: 0–180 PSI Cut-out / cut-in: 120 PSI cut-out, 90 PSI cut-in (adjustable) Rated voltage: AC 100–240 V Rated current: 16 A–20 A Material highlights: Brass adjustable coupler; robust switch body Function: Automatic pressure switch with valve pressure regulator and load/unload control How it solves common problems Prevents overpressure and downtime: Automatic cut-out protects valves, hoses, and tools from excessive pressure. Reduces wear and energy waste: Automatic load/unload control reduces unnecessary motor cycling, extending compressor life and saving energy. Simplifies system setup and tuning: Adjustable output and clear 0–180 PSI gauge let you match pressure precisely to tools and applications. Operation and installation Set desired cut-in and cut-out pressures using the adjustment mechanism; default values are 90 PSI open and 120 PSI cut-out. Connect to any compressor electrical supply within AC 100–240 V and 16–20 A ratings. Attach air line using the brass coupler and verify pressure with the integrated 0–180 PSI gauge. Use the red switch knob for manual operation or leave in automatic mode for hands-free control. Typical applications Workshop air systems: Automatic control for single-station compressors powering impact wrenches, spray guns, and air tools. Small commercial or light industrial use: Maintain consistent pressure for pneumatic equipment, blow-off stations, or inflation devices. Home or hobby compressor setups: Easy pressure management for garage workshops, woodworking tools, and DIY air systems. What to expect Stable automatic pressure control with visible monitoring via the 0–180 PSI gauge. Adjustable, reliable brass coupler and a clearly marked red switch knob for convenient operation. Compatibility with compressors operating on AC 100–240 V and drawing 16–20 A. If you need precise, reliable automatic pressure control with a wide-range gauge and easy adjustments, this pressure switch and regulator provides a durable, user-friendly solution.