Check the listing for details. Tekin RX4 Hardbox Waterproof Sensored/Sensorless D2 Crawler ESC TT2000 Brand New. Condition: New. Listed at 187.94 USD. Tekin’s RX4 is a versatile ESC designed for sensored, sensorless, brushed and brushless motor setups. With massive power handling capabilities, a waterproof design and all the customization features you’d expect from a Tekin ESC, the RX4 has you covered no matter the situation.Not only reliable, this ESC has a host of built in features like a High Voltage BEC, Drag Brake, Data logging and the ability to run either Brushed or Brushless motors. Not to mention the RX4 housing is a thick-walled, reinforced Hardbox design able to withstand the elements and rough environments that come with true Offroad adventuring. Designed to run Tekin ROC 412 and ROC 412HD motors: 2S Lipo up to 4400kV3S Lipo up to 3100kV4S Lipo up to 2300kVFeatures:Easily Access Programming, Anywhere, AnytimeQuickTune One-Touch ProgrammingHotWire CompatibleD2: Dual Drive Mode TechnologyOn-Board Temperature IndicatorHDAC: High Density Copper FET BoardsSolder Posts for Easy WiringHeatsink and Fan w/ Auto-on-Temp SensingOne-Touch Radio CalibrationHigh Voltage BECDATA LoggingWaterproof hardbox design Programmable Features: DB: Drag Brake (13 steps)BS: Brake / Reverse Strength (13 steps)LM: Torque Limiter (7 steps)NW: Neutral Width (13 steps)TP: Timing Profiles 5 Presets - 2 CustomMT: Brushless Modes: Fwd/Brk, Fwd/Rev, Rev Delay; Brushed: Fwd/Brk, Fwd/Rev, Fwd/Rev DelayVC: Voltage Cutoffs: 2S, 3S, 4S and CustomExtensive Tuning via Tekin HotWire (sold separately; TEKTT1451)Custom Throttle ProfilesAdjustable Throttle and Brake MinimumsAdjustable Throttle and Brake FrequenciesSpecifications: Controls: Forward/Brake/Reverse Input Voltage: 2S to 4S Lipo Continuous Current: 240 Amps *per phase BEC: HV 6.0V-7.4V / 8 Amp Switching Motor Type: Brushed/Brushless, Sensored/Sensorless; 2Pole or 4Pole Motors Motor Limit Brushless/Brushed Mode: No Limit Dimensions: 1.6 x 2.0 x 1.4” / 40.6 x 50.8 x 35.5mm Weight Approx: 2.65oz / 75.5grams