| Old type number | 18503 |
| New type number | ZP1200 |
| Other type numbers | G5H, MX146 |
| CV numbers | CV2233, CV2247 |
| Detects | gamma radiation |
| Effective range | 0,0001-1 R/h |
| Plateau | 400-600 V |
| Cathode | 28% Cr, 72% Fe |
| Filling | Neon, Argon, Halogen |
| Height | 53 mm |
| Diameter | 15 mm |
| Symbol |
|
