cermep auto proportional trailer brake controller 90885 — 1–4 axle, LED display & manual override

The cermep auto 90885 is an electronic proportional trailer brake controller that applies smooth, vehicle-synchronized stopping force for 1–4 axle trailers.

Designed for drivers who tow frequently, this compact controller delivers proportional braking using an internal inertia sensor, a digital LED readout, manual override and multi-level boost for heavier loads. It works with most light- and medium-duty trucks and SUVs and supports trailers with electric brakes on 2, 4, 6 or 8 brakes. Vehicle-specific plug-in harnesses are not included, so installation may require a harness or hardwiring depending on your make and model.

How does the 90885 create smoother, more controlled stops?

The 90885 reads your tow vehicle’s deceleration with an internal inertia sensor and modulates current to the trailer brakes in direct proportion. That prevents sudden, jerky engagement and helps the trailer track behind the tow vehicle naturally during routine and emergency braking.

• Internal inertia sensor for real-time proportional output
• Digital LED displays brake power and system voltage
• Manual override slider for immediate trailer braking control
• Multi-level boost for heavier trailer loads

What vehicles and trailer setups are compatible with this brake controller?

This controller is universal in design and works with many Ford, GM, Chevy, Dodge, RAM, Toyota and Jeep models when hardwired or used with the appropriate vehicle harness. It supports trailers equipped with two to eight electric brake units (1–4 axles).

• Supports 2, 4, 6, or 8 electric brakes (covers single to quad-axle trailers)
• Compatible with most light- and medium-duty trucks and SUVs
• Vehicle-specific plug harness not included—may need separate purchase
• Universal wiring options permit professional or DIY installation

How does the 90885 protect my vehicle’s electrical system and the controller itself?

The unit is built with robust circuit protection to guard against short circuits and voltage spikes that can occur while towing. A rugged enclosure and secure connections reduce the risk of moisture or vibration-related failures, extending service life and reliability.

• Advanced circuit protection for short-circuit and surge defense
• Durable housing resists vibration and daily wear
• Secure terminals and connection design minimize connection loss
• Lifetime after-sales support and warranty service for peace of mind

What controls and diagnostics help me tune braking performance?

The controller has an easy-to-read LED display that shows current settings and output voltage, plus a manual override slider for immediate braking. Multiple boost levels let you increase trailer stopping power for steep grades or heavy loads without changing the proportional behavior.

• LED real-time display for brake level and voltage monitoring
• Manual override slider for quick, on-demand brake application
• Multi-level boost options to add stopping power for heavy trailers
• Simple adjustment process suitable for most drivers

Who is this for? The cermep auto 90885 suits owners of trucks and SUVs who tow trailers with electric brakes and want proportional, vehicle-synced braking without complex programming. It’s a good fit for occasional and regular tower alike who need smooth deceleration, clear diagnostics and added stopping power for heavier payloads. If you’re installing on a vehicle that requires a plug-and-play harness, plan to purchase the correct harness separately or consult an installer for hardwiring.