| Model Code | Description | |
|---|---|---|
| 01 | 437.420, 437.425, 437.430, 437.435 | CODE E48 |
| 02 | 437.421, 437.426, 437.431, 437.436 | SV CURRENT SUPPLY SYSTEM AND BUZZER SIGNAL SYSTEM |
| 03 | 437.421, 437.426, 437.431, 437.436 | SV CURRENT SUPPLY SYSTEM AND BUZZER SIGNAL SYSTEM |
| 10 | 425.843 | CODE E48 |
| 11 | 437.427, 437.437 | CODE E48 |