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Backup and warning alarm BM10 and BM30
“Ears open” when it counts: The HELLA BM10 and BM30 backup and warning alarms provide additional safety in dangerous working and traffic situations with a piercing, widely perceptible alarm tone. The alarm sound is generated when reverse gear is engaged and warns both nearby people and other road users of the vehicle backing up. Backup alarms are mandatory in many countries for vehicles with an obstructed view to the rear.
The volume differs depending on the application: For example, warning systems with a volume of approx. 90 dB are often used in road traffic, and with approx. 100 dB on construction sites with high ambient noise. The HELLA BM10 backup alarm is particularly suitable for light commercial vehicles, the BM30 backup alarm for heavy commercial vehicles. The BM30 can automatically adjust the warning tone to ambient noise.
Both HELLA backup alarms have a housing of fiberglass-reinforced nylon and insulated electronics with epoxy resin. This makes them rustproof and particularly protected from moisture and vibrations.
“Ears open” when it counts: The HELLA BM10 and BM30 backup and warning alarms provide additional safety in dangerous working and traffic situations with a piercing, widely perceptible alarm tone. The alarm sound is generated when reverse gear is engaged and warns both nearby people and other road users of the vehicle backing up. Backup alarms are mandatory in many countries for vehicles with an obstructed view to the rear.
The volume differs depending on the application: For example, warning systems with a volume of approx. 90 dB are often used in road traffic, and with approx. 100 dB on construction sites with high ambient noise. The HELLA BM10 backup alarm is particularly suitable for light commercial vehicles, the BM30 backup alarm for heavy commercial vehicles. The BM30 can automatically adjust the warning tone to ambient noise.
Both HELLA backup alarms have a housing of fiberglass-reinforced nylon and insulated electronics with epoxy resin. This makes them rustproof and particularly protected from moisture and vibrations.
The BM10 backup alarm.
Technical drawing of the backup and warning alarm BM10.
The BM30 backup alarm.
The front and side view of the backup and warning alarm BM30.
The view of the backup and warning alarm BM30 from below.
Technical Data
| Rated voltage | 12 – 48 V |
| Sound pressure level at 1.2 m | Fixed/automatic adjustment (see program overview) |
| Frequency range | 700 – 2,800 Hz |
| Power consumption | 12 W |
| Current consumption | Max. 0.6 A |
| Operating temperature | -40 °C to +85 °C |
| Protection class |
IP 67 |
| Lifetime | 100 h (SAE J994) |
| Housing material |
BM10: ABS BM30: Fiberglass reinforced nylon |
| Type approval |
ECE-R10 SAE J994 |
Program Overview
BM10
| Variant | Sound pressure level at 1.2 m | Part number | Packaging unit |
|---|---|---|---|
| with 2 screws | 97 dB(A) | 3SL 009 148-177 | 50 |
| with 2 screws | 107 dB(A) | 3SL 009 148-187 | 50 |
| 140 mm cable with DEUTSCH connector | 97 dB(A) | 3SL 009 148-197 | 50 |
| 140 mm cable with DEUTSCH connector | 107 dB(A) | 3SL 009 148-207 | 50 |
BM30
| Variant | Sound pressure level at 1.2 m | Part number | Packaging unit |
|---|---|---|---|
| 150 mm cable | 97 dB(A) | 3SL 996 139-217 | 36 |
| 150 mm cable | 107 dB(A) | 3SL 996 139-227 | 36 |
| 150 mm cable | 112 dB(A) | 3SL 996 139-237 | 36 |
| 140 mm cable with DEUTSCH connector | 107 dB(A) | 3SL 996 139-247 | 36 |
| 140 mm cable with DEUTSCH connector | 112 dB(A) | 3SL 996 139-257 | 36 |
| 150 mm cable | 87 - 112 dB(A) | 3SL 996 139-267 | 36 |
| 140 mm cable with DEUTSCH connector | 87 - 112 dB(A) | 3SL 996 139-277 | 36 |