HELLA

BM20 Backup and Warning Alarms

The BM20 Backup and Warning alarm is an indispensable element in high-risk work environments and can actively prevent accidents with its high frequency alarm. As soon as reverse gear is engaged, a warning tone is emitted to indicate the vehicle is reversing.

The B20 models feature a white noise reversing tone, which reduces noise pollution, with a model also offering automatic sound level adjustment to suit all environments.

  • Clear, long range alarm sound
  • BM20 range features white noise tone
  • Electronics sealed from dust and moisture
  • Low power consumption

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Multivolt™ for optimum performance in 12 and 24 volt systems.

Multivolt™

Multivolt™ for optimum performance in 12 and 24 volt systems.

Corrosion Proof

Options

BM20 Warning Alarm - White Noise 92 dB(A)

PART NO: 3SL 996 139-501

BM20 Warning Alarm - White Noise 97 dB(A)

PART NO: 3SL 996 139-511

BM20 Warning Alarm - White Noise 92-102 dB(A)

PART NO: 3SL 996 139-531

Specifications

Mounting

Universal mounting bracket for upright, pendant or surface mounting.

Voltage

12V-36V

Power Consumption

Max 12W

Sound Level

Part Number Description Sound level @ 1.2m
3SL 996 139-501 BM20 Warning Alarm - White Noise 92 dB(A)
3SL 996 139-511 BM20 Warning Alarm - White Noise 97 dB(A)
3SL 996 139-531 BM20 Warning Alarm - White Noise 92-102 dB(A)

Temperature

Operating range -40ºC to 85ºC.

Protection

Reverse polarity protection
IP 6K7 (Enhanced protection against dust and water immersion)

Cable Length

Supplied with 140mm sheathed cable with DT socket

Compliance

ECE-R10, SAE J994   CE

Accessories

Part Number Description
8JA 959 736-811 2 Pole DT plug, wedge and 2 contacts
8KB 958 757-501 2.0m sheathed cable with DT plug

Outline

All dimensions in mm
All dimensions in mm

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