Partyline: Spare Lamps for MS-400 Main Station Talk Push Buttons
The MS-400 Party-Line Main Station (obsolete, replaced by the MS-440 main station) uses a JKL T-1 1/2 Bi-pin lamp for the Talk push buttons, part # E13522, the lamp is rated at 24V at 30mA. The Clear-Com part number is 390005, contact inside sales for pricing and availability.