Following products have rule for mounting direction.
The other sounders except for the above don’t have rule.
For the products having rule
marking (Pole display) is printed on their top.
Terminal of ⊕
marking side should be connected to hot side of D.C. plus.
※Case of mounting reverse direction
- PKMCS1818E20*, PKM17EPP-20* ： Characteristics could be degraded
- PKB*： No sound
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