My B-Series Thunderbolt 1003 Chopper Only, Hi-Lo (Chopper Level 1)

Recorded on Wednesday, January 5th, 2022. This is video of my B-Series Thunderbolt 1003B doing hi-lo chopper only on chopper level 1 (running on 120VAC). I got this siren from West Shore Services back 2021. The solenoids are running from my custom RCM3. I plan to install this siren in spring of this year. Recorded by: Canon EOS Rebel T7 1500D Panasonic HC-V180K