A permanent magnet moves as the float follows the fluid level. When it passes in front of the Reed contact, built in the housing, the signal changes; the end-user set up the logic as a NO or CN contact.

A NO/NC Reed contact has a low switching capacity. Use our amplifier relay ES2001 (500 VA / 5A / 250 V) to protect the Reed.

Brass and stainless steel models configuration
By moving the contact cable output on its support, you can choose between a NO or NC status:
NO: blue arrow appearing (Open with high level)
NC: red arrow appearing (Close, with high level)
Switch changing point is adjustable all along the arrow length (4 mm) corresponding for the float from 4 to 10 mm below its horizontal position
The hysteresis is from 4 to 10 mm below the horizontal float position.

PPH models
There is no possibility to adjust the PPH models. The mounting position fixes the status of the contact: NC mode when float and controller are on the same axis. A rotation of 180° will change the fixed status to NO. The hysteresis is about 10 mm.