ELK M1 with System Sensor 2WTA-B

[little66085]

Can someone explain the wiring for these?  I assume 2 wire in series, but the directions do not show multiple smokes.  Also the specs show 130mA, but is that per smoke?  Thanks!
 
https://www.systemsensor.com/en-us/Documents/i3_Series_Manual_I56-1800.pdf

 

[drvnbysound]

Diagram 3A shows (2) of them in series. Just move the EOL resister to the next one and rinse & repeat wiring to add more...

 

[little66085]

Well stupid me,  I never looked at the web version.  The instructions provided with the smokes do no show the 2 smokes in series.  Thanks for the catch!