Difalco Design DD842 voltmeter kit, Genesis 2, 4-digit display. Compatible with newer DD304's with the newer PCB on the heatsink.
Refer to second product picture which shows DD842 installed on the newer style DD304 printed circuit board (PCB) mounted on the heatsink. PCB and heatsink are NOT included (must purchase DD304 controller separately).
Note: DD842 is NOT compatible with the NEO line of Difalco controllers (DD300, DD301, DD302).