VA-1A: Primary Replacement Volt/Amp Instrument with Internal Shunt. Discharge and High Voltage Warning Lights. 100 amp capability. .1 volt and .1 amp Resolution. Accuracy: 1%. 2 1/4" Mount. 2.5" Depth. 9 Oz. Unit. Viewable in direct sunlight. Backlit for night operation. Operates from 7.0 to 40 volts at .1 amp.

VA-1A-xx: Primary Replacement Volt/Amp Instrument requiring an External Shunt. This unit must be matched to the aircraft's external shunt (i.e., 50 amp, 50mV external shunt must use a VA-1A-50). E.I. will calibrate the unit to match any shunt. Unit includes Discharge and High Voltage Warning Lights. .1 volt and .1 amp Resolution (1 amp Resolution for shunt values over 65 amps). Accuracy: 1%. 2 1/4" Mount. 2.5" Depth. 9 Oz. Unit. Viewable in direct sunlight. Backlit for night operation. Operates from 7.0 to 40 volts at .1 amp.

 Order must specify shunt value.

RSVA-3: Remote Switch used to monitor the Left and Right Alternator and Battery Current for Twins. To be used with any external shunt unit. Body 1" x 1" x 1.5" depth. Front Panel 2" x 1.15." 3 Oz. Unit. STC'd, PMA'd.

S-50: 50 amp, 50mV (100 amp capability) External Shunt. To be used with a VA-1A-50. Size 2" x 1.2" x 1.7" height. 3.5 Oz. Unit.

S-300: 300 amp External Shunt, To be used with a VA-1A-300, Size 3.25" x 1.75" x 1.75" height. 11.5 Oz. Unit.