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ob1 V3.1M LED System for Tractor Truck 1ob1 V3.1M LED System for Tractor Truck 2ob1 V3.1M LED System for Tractor Truck 3ob1 V3.1M LED System for Tractor Truck 4

V3.1M - Standard kit (4-Channel, 6 LED cables)

  • Install on Semi Truck, internal Bluetooth wireless connects with V3.1S (V3.1s unit separately available).
  • 12 LED Connectors available (only 6 LED cables included in this set);
  • FR1-2 (Front lamp)
  • BR1 (Brake lamp)
  • L1-2, R1-2 (Left & Right signals)
  • AUX1-2 (AUX lamp)
  • FOG (Fog lamp) 
  • ROF (Roof lamp)
  • REV (Reverse lamp)
  • 1-4 Channels input;
  • Main / Sub Unit design, uses 1 cable to connect each others
  • Support virtually all RC systems in market
  • High Response 2.4G System, PCM / PPM (FM), AM
  • Powered by BEC (3A) of RC system, no external power required for this 6 LED set.
However if HIGH / EX-HIGH Power option used, external BEC may be required.

V3.1M Standard kit includes:

  • Main unit x 1
  • Sub Unit x 1
  • Main cable x 1
  • SET/PAIR Switch cable x 1
  • Extend LED cable x 1
  • Front LED cable x 1 (5mm WHITE LED x 2)
  • Rear LED cable x 1 (5mm RED LED x 2)
  • Left / Right LED cable x 2 (3mm YELLOW LED x 4)
  • Left / Right LED cable x 2 (5mm high YELLOW LED x 2)
  • User Manual (English / Traditional Chinese) x 1


CH1 - Steering

  • Left / Right winker lamp

CH2 - Throttle

  • 2-level brightness brake lamp
  • Auto hazard lamp
  • Reverse lamp


  • Manual hazard lamp
  • Flash mode Toggle
  • Front / FOG/ ROF lamps On/ Off

CH4 - Toggle

  • Toggle function (Hold for 3 sec. to change LED status, total 4 Toggle steps !)
  • Support legs position detection

Special functions:

  • Reverse beep (Buzzer is required)
  • Low Voltage Detection (LVD), Buzzer uses as audible alarm
  • Flash mode (All LED), Press SET switch anytime (or use CH3) after power on to change total 7 flashing styles
  • FR2, AUX2, ROF connectors have 4 Power Options (Low/ Mid/ High / Extra High)
1 connector Max. can drive 16 LED (20mA) type

V3.1M Specification:

  • Bluetooth Protocol: Bluetooth Specification V2.0 with EDR
  • Input Voltage: 5-6VDC (Powered by BEC), absolute Max. 9V
  • Low Voltage Detection battery type: 1-6S LiPo / LiFePo / User define Max. 25.2V (V3.1M)
  • Support RC Modulation: High Response 2.4G system / PCM / PPM (FM) / AM (V3.1M)
  • Dimension (Main unit): 44mm (L), 38mm (W), 10mm (H)
  • Dimension (Sub unit): 22mm (L), 22mm (W), 10mm (H)
  • Weight: Main unit 12g / Sub unit 10g (Not includes cables)
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  • BRAND : ob1
  • MODEL NO. : ob1-V3.1M
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