The double unit warbler models require two audible alarm units to generate the alternating warble sound. The following combinations of models are possible:
Medium Loud – Fast Warble:
Use SC628DR with SC628WR (alternating 1900 Hz & 2900 Hz)
Use SC628HR with SC628WR (alternating 2900 Hz & 4500 Hz)
Medium Loud – Slow Warble:
Use SC628DR with SC628JW (alternating 1900 Hz & 2900 Hz)
Use SC628HR with SC628JW (alternating 2900 Hz & 4500 Hz)
Soft – Fast Warble:
Use SC628ER with SC628FW (alternating 1900 Hz & 2900 Hz)
Soft – Slow Warble:
Use SC628ER with SC628FJW (alternating 1900 Hz & 2900 Hz)
Wiring Diagram
Note:
The “R” in the part number means RoHS compliant. It is okay to use the same part number but without the “R”. For example, SC628W and SC628WR.