In case you ever need to add-on a modified siren/spot inside a junction box, this was my diy solution. The wall mounting box include the electronics (siren), while the junction box will accommodate the siren magnet and spot lights attachments. I leave a separation (.25 inches) between both parts, in order to “push” the air outside the enclosure. The 30W donor siren is model ELK SS-30 (105db), using Dahua PFB-203 (wall mount) and Dahua PFA-130 (junction box). You will need 2 relays in order to trigger the siren and/or the spot light. Included video showing both modes (spot and siren/strobe)
