This is the new single pressure switch :

Minimum Operating Pressure : 1 bar (15 psi )

Maximum Operating Pressure : 9 bar ( 130 psi )

Ambient Operating Temperature : -10 Deg. To 70 Deg. C ( 15 Deg. To 160 Deg. F )

1220 NB-1 AC Volts

• Supply Voltage : 120 VAC 50/60 Hz +/- 10 %
• Supply Current : 30 mA max. ( no load / sensor )
• Output Voltage : Supply voltage less 2 V
• Output Current : 500 mA

1220 NB-2 DC Volts

• Supply Voltage : 12-24 VDC +/- 10%
• Supply Current : 20 mA max. ( no load / sensor )
• Output Voltage : Supply voltage less 1.7V max.
• Output Current : 500 mA max. ( before overload shutdown )