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2026-05-14
Flasher Units
FORVIA HELLA flasher units ensure reliable indicator lamp failure monitoring in vehicles and trailers. A lamp failure is indicated by an increased flash rate or a deactivated indicator control lamp, thereby contributing to vehicle and road safety. Depending on the vehicle architecture, flasher units are available with a single circuit, two separate circuits, or as pulse flasher units. These variants enable flexible control of turn indicators, trailer functions, and indicator lamps in passenger cars, commercial vehicles, buses, and trailers.
If indicator lamp failure monitoring is not implemented via the vehicle electrical system, FORVIA HELLA LED flasher units with ISO pulse provide a reliable solution. In combination with ISO 13207 compliant LED indicator lamps, the flasher units monitor the power consumption when the indicator lamp is switched on. A defined pulse of 21 W -equivalent to that of an incandescent bulb - is checked within 100–130 ms. This allows incandescent bulbs and ISO 13207 compliant LED lamps to be operated in any combination. This is particularly advantageous for towing vehicles used with frequently changing trailers or semi trailers.
FORVIA HELLA flasher units ensure reliable indicator lamp failure monitoring in vehicles and trailers. A lamp failure is indicated by an increased flash rate or a deactivated indicator control lamp, thereby contributing to vehicle and road safety. Depending on the vehicle architecture, flasher units are available with a single circuit, two separate circuits, or as pulse flasher units. These variants enable flexible control of turn indicators, trailer functions, and indicator lamps in passenger cars, commercial vehicles, buses, and trailers.
If indicator lamp failure monitoring is not implemented via the vehicle electrical system, FORVIA HELLA LED flasher units with ISO pulse provide a reliable solution. In combination with ISO 13207 compliant LED indicator lamps, the flasher units monitor the power consumption when the indicator lamp is switched on. A defined pulse of 21 W -equivalent to that of an incandescent bulb - is checked within 100–130 ms. This allows incandescent bulbs and ISO 13207 compliant LED lamps to be operated in any combination. This is particularly advantageous for towing vehicles used with frequently changing trailers or semi trailers.
LED flasher unit for controlling direction indicators in accordance with ISO 13207-1.
Pin configuration for LED flasher unit 3+1 and 2+1.
Pin configuration for LED flasher unit 2+1+1
Technical Data
| 12 V | 24 V | |
|
Operating voltage |
10.5 – 15 V | 18 – 32 V |
|
Rated load |
4DN 009 492-101:
4DW 009 492-111: |
4DM 009 492-001:
4DW 009 492-011: |
| Failure control | EP / EPP | EP |
|
Flashing frequency |
75 – 110 Hz |
70 – 110 Hz |
| Bright-light time | 40 – 60% |
40 – 60% |
| Operating temperature | -40 °C to +85 °C | -40 °C to +85 °C |
| Storage temperature | -40 °C to +85 °C | -40 °C to +85 °C |
| Protection class | IP 54 | IP 54 |
| Connection | Flat connector DIN 46244 A6: 6.3 x 0.8 mm | Flat connector DIN 46244 A6: 6.3 x 0.8 mm |
Program Overview
| Variant | Part number | Packaging unit |
|---|---|---|
| 12 V, LED flasher unit 3+1 | 4DW 009 492-111 | 1 |
| 12 V, LED flasher unit 2+1+1 | 4DN 009 492-101 | 1 |
| 24 V, LED flasher unit 3+1 | 4DW 009 492-011 | 1 |
| 24 V, LED flasher unit 2+1 | 4DM 009 492-001 | 1 |
This list includes only LED flashers with ISO pulses. The complete range of flashers can be found in the brief information sheet available for download.