What you see in the pictures is what you get. Excellent condition and in good working order. Roadmaster Flat Tow Brake System - RM-9400 Air Brakes Air Over Hydraulic Brakes Hydraulic Brakes Brake Systems Proportional System Portable System Roadmaster Recurring Set-Up Not Power Assist Brake Compatible Portable unit gets you smooth braking without a complex installation. Measures the RV's braking and applies your towed car's brakes with the same intensity, at the same time. Easy to swap between multiple cars. Includes LCD braking monitor. Features: Applies towed vehicle's brakes proportionally for comfortable braking Measures motorhome's braking and activates car's brakes with same intensity Prevents false braking with terrain-sensing technology Lets you adjust force and sensitivity for smooth braking Swaps easily between multiple towed vehicles Requires a second vehicle kit (RM-98400 - sold separately) for each alternate car Adjusts to fit almost any car Adjustable feet: sits level for optimal performance Adjustable clamp: fits around almost any brake pedal Adjustable seat pad: rises/lowers to brace firmly against seat Monitors braking with wireless receiver - plugs into 12V accessory outlet in cab of RV 3 LED lights keep you updated on what the system is doing at a glance LCD screen displays detailed messages, helping you troubleshoot Audio alarms alert you to problems immediately Transmitter connects to brake light switch to ensure accurate reading Protects against battery drain Monitor alerts you to low battery level Sleep mode turns system off if battery gets too low, while retaining emergency braking power Meets the braking requirements of both the US and Canada Made in the USA Specs: Dimensions: 12" tall x 11-1/4" wide x 16" long Voltage: 12 volts DC Requires 15 amps of power to function properly Length of power cord: 42" Max amperage draw: 10.8 amps Idle amperage draw: 47 mA Weight: 17 lbs Note: Cannot be used with hybrids or other cars with continuous-power-assist brakes.