cromwell
Member
Hi friends!
Maybe a dumb question but I don´t know what a "flapper" is on a Pulsator siren...
Is it the grille in the front or something behind that grille?
What is the purpose of the flapper?
Is a Pulsator siren more powerful than for example a model 66 siren??
Greetings
Maybe a dumb question but I don´t know what a "flapper" is on a Pulsator siren...
Is it the grille in the front or something behind that grille?
What is the purpose of the flapper?
Is a Pulsator siren more powerful than for example a model 66 siren??
Greetings