The SP-20N/A ceiling speaker is used with open voice intercom systems for two-way communication when a discreet ceiling mounted sub station is needed. A NP-25V capacitor is required if there is no call button associated with the speaker.
Ceiling speaker is used with open voice intercom systems for two-way communication when a discreet ceiling mounted sub station is needed
A NP-25V capacitor is required if there is no call button associated with the speaker