| Supply voltage U | 9-30 VDC (Nom. 12/24 VDC) |
| Alarm state current | - base type B24 and B24D: 20mA/12-30V; - base type B24RD: 33mA/12V, 49mA/ 24V, 57mA/30V - base type B12: 18mA/9V, 29mA/12V, 32mA/15V |
| Class | A2/S (according to EN 54-5) |
| Protected area | up to 35 m2 (in accordance with EN54) |
| Installation height | up to 3,5m (in accordance with EN54) |
| Output in alarm state at terminal RI | 20mA (max)/-3.3V |
| Degree of protection | IP 30 |
| Operational temperature range | -10 / +60°С |
| Relative humidity resistance | (93 ± 3) % at 40°С |
| Dimensions (incl. base) | diameter 102 mm, h 42 mm |
| Weight (incl. base) | 160 g |