Tekonsha's 8507120 is a Brakeman IV timed trailer brake controller for trailers with 1 to 4 axles. It applies the trailer brakes on a preset delay and ramp once you brake, with the aggressiveness set by you rather than by vehicle deceleration. A digital output shows the settings and any fault. Rated to 30A. Timed braking Suits trailers with 1 to 4 axles For electric brakes Digital Output display On-board diagnostics Rated to 30A Circuit-breaker protected Solid-state construction Mounting bracket included Limited Lifetime Warranty Specifications Part number 8507120 Type Trailer Brake Controller Control type Timed Trailer axles 1 to 4 axles Brake type Electric Display Digital Output Amperage 30A Diagnostic capable Yes Circuit breaker protected Yes Solid state Yes Hydraulic connections No Bracket included Yes Housing colour Black Material Plastic Shipping dimensions 7" x 4.5" x 2.5" (Shipping) Weight 0.7 lb UPC 042899017721 Warranty Limited Lifetime Warranty