Indicate, Warn, Alarm, Break, Start and much more

The Kellermann CR4® is the ultimate all-in-one solution for motorcycles with an indicator switch. The load independent indicator relay elevates the functionality of older motorcycles to an up-to-date level and even optimizes the electronics of recent bikes. Like all Kellermann flasher relays, the eventual unwanted flashing or other indicator problems are eliminated.

For a biker, the CR4® offers many controlling options: indicators, warning, alarm, brake light, start, etc. However, the message is clear: use what you need. The conductor is free to choose what functions the Kellermann CR4® should control. The integrated flasher relay offers a convenient short five-flashes cycle for the indicators. This conductor can then focus on turning or manoeuvering. You can deactivate that function anytime with an on/off switch. This relay has even more to offer. Indeed, it is also a hazard light flasher, an alarm unit, an adaptive brake light and a starter assistant.

The hazard warning flasher can run without the ignition key. It can be shut off manually. The alarm unit signals eventual thieves. It reacts on movements and shocks and emits warning signals from both the horn and the indicators. You can set the alarm simply by turning the ignition on and off in quick succession.

In addition, it also has an integrated flasher reset memory and battery protection. Should the supply voltage drop below a certain value, the alarm system switches off in order to prevent overworking the battery. The adaptive brake light makes the ride safer. Emergency or very strong breaking will create a flashing brake light that will warn the following traffic. The starter assistant lets the engine start after the hand brake is pulled three times.

Despite the unit’s many functions, it can be installed rather easily. You only have to connect the wires directly to the relay.

ECE-tested Flasher Unit With Convenience Functions + Hazard Warning Unit + Adaptive Brake Light + Starter Assistant + Alarm Unit

Suitable for indicator switches
Very simple exchange relay installation
Replaces the original 2-3 pole flasher relay
Hazard warning flasher can be activated with and without additional hazard switch
Alarm unit responds to changes in position and vibration
NEW Alarm sensibility adjustable in 10 steps
Alarm Unit with an external alarm sensor port
Battery protection switching (low-voltage protection)
Restricts the accompanying flashing of non-activated indicators
Load-independent / steady flash rate
Indicator switching capacity 0.5-85 watt (max. 42.5 watts per side)
With horn switch port (max. 50 watt), works as a power horn relay
Intuitive operation
Indicator reset memory
Slim housing 128 x 22 x 12 [mm] (L/W/H) for installation almost anywhere on the motorcycle
High-quality metal housing
Suitable for 12 volt DC applications

Click to see the manual