Following products have rule for mounting direction.
- PKMCS1818E20*
- PKM17EPP-20*
- PKB*
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
Related FAQs
Most people who viewed this page also referred to the following pages.
Q.
Does a Piezoelectric Sounder (Eternal Drive Type) have polarity?