U430B

Honeywell Electronic Pressure switch for liquid, high viscosity/roiled liquid (SmartPress)
Accessories / Connectors for plug 1 + 2 (OC and analog outputs) / Plug 3 (relay outputs ST4) / Syphons

Syphons for high temperature, steel, U-shape. For more accessories, see Accessories for Pressure Switches / Transmitters)