2400 / 20 for sale, brand-new and used.

Electronic System Protection, Inc. (ESP) Transient Voltage Surge Supressor Model SPD12020ENJ Rated 20 Amps or 2400 Watts This is a used unit that has been tested. The green light in ON in the picture but you may not be able to see that because of the lighting.

The H11-5 serial interface module is a QBUS (DEC) compatible module supporting an EIA RS-232 or 20 mA current loop interface. Crystal controlled baud rates of 50, 70, 110, 134.5, 150, 200, 300, 600, 1200, 1800, 2400, 4800, and 9600, data word lengths, and stops bits are jumper selectable. This module is plug, signal, and program compatible with DEC LSI-11 QBUS systems.