| Type | BU1 |
| Housing, Colour | ABS, black |
| Tone type | pulsing tone |
| Tone frequency | 2800 ± 400 Hz |
| Sound pressure | 108 dB |
| Temperature range | -20°C to +70°C |
| Terminal | pre-wired - 2,25 m cable |
| Weight (g) | 110 |
| Type | BU1 |
| Housing, Colour | ABS, black |
| Tone type | pulsing tone |
| Tone frequency | 2800 ± 400 Hz |
| Sound pressure | 108 dB |
| Temperature range | -20°C to +70°C |
| Terminal | pre-wired - 2,25 m cable |
| Weight (g) | 110 |