Plus black sounder base with pcb module, battery, no cover. Grade 3.
Plus blue sounder base with pcb module, battery, no cover. Grade 3.
Plus amber sounder base with pcb module, battery, no cover. Grade 3.
Deltabell E Module only.
E white sounder base with pcb module, battery, no cover. Grade 3.
E red sounder base with pcb module, battery, no cover. Grade 3.