Tecmark 3906 pressure switch

This SPST Tecmark pressure switch is fully adjustable for a pressure threshold from 1 to 5 psi. It is designed for pilot duty, with a maximum current of 0,5A at 230V (1A at 120V).

Characteristics
Relay type: SPST. The circuit between the two spade connectors is closed only when the water pressure reaches the required threshold.
Pressure thresholds: from 1 to 5 psi
Maximum current rating: 0,5A at 230V (1A at 120V)

The 3906 model is rarely seen in hot tubs, and it is unusual in that it has a barbed fitting that slides inside a 1/8" or 3/16" flexible pipe, as opposed to a thread that screws directly into a pipe under pressure.

Part numbers
Tecmark: 3906