Flap size up to approx

• check 0.5 m²(2)
• check 0.8 m²(1)
• check 2 m²(1)
• check 4 m²(1)
• check 6 m²(1)
• check 8 m²(1)

Control:

• check Continuously (0/2...10V)(1)
• check Open / Closed(2)

SPDT Auxiliary Switch:

• check NO(1)
• check YES - 2 pcs(1)