Product code: Cooper Wheelock Common Control Unit CA-312-1 No Hardware newest
Appears to be newest new Box has been opened No hardware included Wheelock Series CA Common Audible Control Units monitor multiple analog telephone lines (tip and ring) to provide all call signaling, zoned signaling or night bell connection. These control units also enable connection for operation of external audible or visual alerts to be operated directly off the telephone ring voltage output. AC.
Appears to be newest new Box has been opened No hardware included Wheelock Series CA Common Audible Control Units monitor multiple analog telephone lines (tip and ring) to provide all call signaling, zoned signaling or night bell connection. These control units also enable connection for operation of external audible or visual alerts to be operated directly off the telephone ring voltage output. AC.