Purpose:

Operates humidification equipment on RH fall or dehumidification equipment on RH rise.

Features:

• Sensing element of thin, moisture sensitive nylon ribbon provides reliable operation even when ambient temperature conditions change.
• Fully enclosed, dust free, SPDT, snap-acting switch.
• Removable setting knob prevents tampering.
• Mount vertically on 2 x 4 in. junction box (not to be duct mounted).
• Includes alternate scale and faceplate for horizontal mounting.