| Type | Order No. | Description | Nominal/operating voltage | Max. nominal current |
| dHE1 | 370 000 000 | Ex-proof sounder | 85 - 265 V AC 50 - 60 Hz | 0,100 A (230 V AC) 0,160 A (120 V AC) 0,165 A (115 V AC) |
| dHE2 | 370 000 001 | Ex-proof sounder | 21,6 - 75 V DC | 0,520 A (24 V DC) |
