PS2-A7K ALCO pressure switch.

Features
• Adjustable pressure range
• Narrow adjustable differential depending on model
• Range and differential pointer in units bar and psig
• Range and differential individually lockable by wire seal
• High rated SPDT contacts for all versions
• Shatter resistant contacts
• Heavy duty, finger-proof terminal blocks
• Captive terminal and cover screws
• Dual pressostats with two independent SPDT switches
• Manual toggle for system checkout and override
• Standard pressure connection 7/16”-20 UNF for
1/4” SAE male flare connection