BM Series Reversing Alarms
"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.
BM10 Series Reversing Alarm
Dimensional Sketch of the BM10 Series
BM20 Series Reversing Alarm
Dimensional sketch of the BM20 Series
BM30 Series Reversing Alarm
Dimensional Sketch of the BM30 Series
BM40 Series Reversing Alarm
Dimensional sketch of the BM40 Series
Technical Data
| BM10 | BM20 | BM30 | BM40 | |
| Operating voltage | 12-48 V | |||
| Frequency range | All series , Tonal Noise: 800-1400Hz BM20 & BM40 White Noise: 600-1600Hz |
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| Sound pressure level @1.2m | 87 – 112 dB (A) | |||
| Power consumption | 12W | 18W | ||
| Current consumption | 0.6 A Max | 1.5 A Max | 0.6 A Max | 1.6 A Max |
| Operating temperature | - 40°C to + 85°C | |||
| Protection class | IP 6K7 | IP 65 | ||
| Material | Housing: ABS | Housing: PA66+15% GA | Housing: Glass filled nylon | Housing: PA60 |
| Type approval | ECE-R10 SAE J994 |
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Program Overview
| Description | Output - Lp @ 1.2m, dB(A) | Noise Output Type | Electrical Connection | Packing | Legacy Part Number | Article Number |
|---|---|---|---|---|---|---|
| BM10 | 97 | Tonal Noise | Bolted Terminal Connection | Single Piece | 6015 | 3SL 910 035-001 |
| BM10 | 97 | Tonal Noise | Bolted Terminal Connection | 50 Pieces | 6015BULK | 3SL 009 148-177 |
| BM10 | 107 | Tonal Noise | Bolted Terminal Connection | Single Piece | 3SL009148187 | 3SL 009 148-187 |
| BM10 | 97 | Tonal Noise | 2-Pin DT-Type Socket Connection | Single Piece | 6009 | 3SL 009 148-011 |
| BM10 | 97 | Tonal Noise | 2-Pin DT-Type Socket Connection | 50 Pieces | 6009BULK | 3SL 009 148-197 |
| BM10 | 107 | Tonal Noise | 2-Pin DT-Type Socket Connection | Single Piece | 6010 | 3SL 009 148-021 |
| BM10 | 107 | Tonal Noise | 2-Pin DT-Type Socket Connection | 50 Pieces | 6010BULK | 3SL 009 148-207 |
| BM20 | 92 | White Noise | 2-Pin DT-Type Socket Connection | Single Piece | 6051 | 3SL 996 139-501 |
| BM20 | 97 | White Noise | 2-Pin DT-Type Socket Connection | Single Piece | 6052 | 3SL 996 139-511 |
| BM20 | 102 | White Noise | 2-Pin DT-Type Socket Connection | Single Piece | 3SL996139521 | 3SL 996 139-521 |
| BM20 | 92-102 dB(A), self adjusting level | White Noise | 2-Pin DT-Type Socket Connection |
Single Piece |
3SL996139531 | 3SL 996 139-531 |
| BM30 | 107 | Tonal Noise | 2-Pin DT-Type Socket Connection | Single Piece | 6016 | 3SL 996 139-102 |
| BM30 | 107 | Tonal Noise | 2-Pin DT-Type Socket Connection | 36 Pieces | 6016BULK | 3SL 996 139-247 |
| BM30 | 112 | Tonal Noise | 2-Pin DT-Type Socket Connection | Single Piece | 6017 | 3SL 996 139-112 |
| BM30 | 112 | Tonal Noise | 2-Pin DT-Type Socket Connection | 36 Pieces | 6017BULK | 3SL 996 139-257 |
| BM30 | 87-112 dB(A), Self Adjusting level | Tonal Noise | 2-Pin DT-Type Socket Connection | Single Piece | 6018 | 3SL 996 139-002 |
| BM30 | 87-112 dB(A), Self Adjusting level | Tonal Noise | 2-Pin DT-Type Socket Connection | 36 Pieces | 6018BULK | 3SL 996 139-277 |
| BM40 | 97, 102 or 112 dB(A), Switchable levels | Tonal Noise | 2-Pin DT-Type Socket Connection | Single Piece | 6049 | 3SL 996 139-551 |
| BM40 | 97, 102 or 107 dB(A), Switchable levels | White Noise | 2-Pin DT-Type Socket Connection | 36 Pieces | 3SL996139561 | 3SL 996 139-561 |
| BM40 | 97-112 dB(A), Self Adjusting level | Tonal Noise | 2-Pin DT-Type Socket Connection | Single Piece | 6048 | 3SL 996 139-571 |
| BM40 | 92-107 dB(A), Self Adjusting level | White Noise | 2-Pin DT-Type Socket Connection | Single Piece | 3SL996139581 | 3SL 996 139-581 |