Wiring; Spdt Wiring; Dpdt Wiring - Hitron HM-90 Series Instruction Manual

Wiring

First of all, remove the product housing cover for wiring. For High alarm, connect the wires
to the terminal COM-N.O of the switch block. For Low alarm, connect the wires to the
terminal COM-N.C of the switch block. For H/L Control, connect to COM-N.C for water
supply control and COM-N.O for water drainage control. The housing is designed to
prevent damage from dust or water, and if necessary, anti-corrosion (Epoxy Coated)
housing is optional.

SPDT Wiring

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DPDT Wiring

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Internal circuit
Common (COM)
Normal Open (N.O)
Normal Close (N.C)
HITROL CO., LTD.
1
Common (COM)
2
Normal Open (N.O)
3
Normal Close (N.C)
Common (COM)
Normal Open (N.O)
Normal Close (N.C)
HM-30, 90 Series
12