SPA-400 Sigtronics Panel Mounted Intercom (12-24V) (Inop) (Core)

SPA-400 Sigtronics Panel Mounted Intercom (Minus Knobs) (Core)

Sigtronics Aircraft Intercom SPA-400 TSO SN 6027004 -OPS Tested Good

SPA-400 Sigtronics Panel Mounted Intercom (Minus Face Plate and Knobs) (12-24V)

Sigtronics SPA400 4- Place Intercom

Sigtronics Intercom SPA-400

Sigtronics SPA-400 TSO 4-Place Panel-Mounted Intercom

SPA-400 Sigtronics Panel Mounted Intercom Assembly (V: 12 or 24)