Large IN-7B nixie tube. IN-7B tubes display the following scientific symbols: Ω, V, Hz, S. Digit size - near 18 mm.

Brightness: >=100cd/m^2

Angle of visibility: >= 90 deg

Power supply voltage: >= 200 V

Discharge appearance voltage: <= 170 V

Discharge voltage: <= 150 V

Display current: <= 4 mA

Operations current: Running from DC 4 - 7 mA

Running from AC with 50 Hz (average value): 2 - 4 mA

Life time: >= 5000 hours