Glow intensity: not less than 500 cd/m²
Number of segments: 18
Heating voltage: 2.15 – 2.55V
Grid voltage: 25 – 30V
Anode-segment voltage: 25 – 30V
Glow current: 42 – 52mA
Grid current: no more than 10mA
Anode-segment current: no more than 0.5mA
Ready time: no more than 1 sec.