Important Warnings
Reacher Tech is not responsible for your use of this product, or any damage or injuries you may cause or sustain as a result of its usage.
Always place safety as priority when you use the product.
An electric motor that is connection with battery pack and ESC may start unexpectedly and cause serious danger. Always treat them with enough 
respect.
We recommend you to remove the propeller when you working on the device that with power source connected.
Observe all local laws when you surfing.
Surfing Carefully avoid collisions.

Key Features
Specification
Throttle calibration
Wires Connection
Normal Startup Procedure
Programming Items(The option written in bold font is the default setting)
1. Adopting new generation craft on the MOSFET, low heat generation, withstand large current instantly, and high reliability.
2. Adopting high performance 32 bit microprocessor, the operation frenquency is up to 170MHz which makes the ESC stronger computing ability and 
 faster running speed.
3. The ESC is fully waterproof, the waterproof level is up to IP67, and it is equipped with metal water cooling to ensure efficient heat dissipation.
4. Super smooth start-up and accurate throttle linearity make the ESC suitable for various of applications such as, all kinds of RC boat models, 
 electric surfboard and other underwater applications.
5. The ESC has two running modes for different applications:“Forward Only” and “Forward and Backward”.
6. The ESC has freewheeling which makes the ESC with higher driving efficiency and more energy-saving.
7. Adjustable SBEC 6V/7.4V/8.4V output voltage provides more powerful power to the servo. (OPTO ESC doesn’t have built-in BEC)
8. Multiple protections: start-up, over-heat, low-voltage cutoff, signal loss, phase loss, over-current, abnormal power-on voltage, over-load protection.
9. Support high RPM motors, and compatible with most motors in the market.
10. Support programming via Phone App or LCD program card, easier and more convenient operation(Extra Reacher App adapter or LCD program 
box G2 needed.)
11. Support data communication with Futaba remote control (S.BUS2 protocol).（Only 130A HV,160A HV, 300A HV 6-14S ESCs have this feature.)
12. Support CAN protocol makes the ESC can be widly used for various of applications.
13. The ESC has data returning feature, it can send data in real-time: current, voltage, temperature, RPM, throttle and ESC status. And you can check the data via App or LCD program Box G2 in real-time.

Wires Connection
Normal Startup Procedure
Programming Items(The option written in bold font is the default setting)
1. Adopting new generation craft on the MOSFET, low heat generation, withstand large current instantly, and high reliability.
2. Adopting high performance 32 bit microprocessor, the operation frenquency is up to 170MHz which makes the ESC stronger computing ability and 
 faster running speed.
3. The ESC is fully waterproof, the waterproof level is up to IP67, and it is equipped with metal water cooling to ensure efficient heat dissipation.
4. Super smooth start-up and accurate throttle linearity make the ESC suitable for various of applications such as, all kinds of RC boat models, 
 electric surfboard and other underwater applications.
5. The ESC has two running modes for different applications:“Forward Only” and “Forward and Backward”.
6. The ESC has freewheeling which makes the ESC with higher driving efficiency and more energy-saving.
7. Adjustable SBEC 6V/7.4V/8.4V output voltage provides more powerful power to the servo. (OPTO ESC doesn’t have built-in BEC)
8. Multiple protections: start-up, over-heat, low-voltage cutoff, signal loss, phase loss, over-current, abnormal power-on voltage, over-load protection.
9. Support high RPM motors, and compatible with most motors in the market.
10. Support programming via Phone App or LCD program card, easier and more convenient operation(Extra Reacher App adapter or LCD program 
box G2 needed.)
11. Support data communication with Futaba remote control (S.BUS2 protocol).（Only 130A HV,160A HV, 300A HV 6-14S ESCs have this feature.)
12. Support CAN protocol makes the ESC can be widly used for various of applications.
13. The ESC has data returning feature, it can send data in real-time: current, voltage, temperature, RPM, throttle and ESC status. And you can check 
 the data via App or LCD program Box G2 in real-time.
1. Running Mode: Forward Only/Forward and Backward 
2. Brake Force: 0%/0-100%
3. Timing: 15/0-30 degrees
4. Motor Rotate: CW/CCW
5. SR function: ON/OFF
 The synchronous rectification function makes ESC with higher driving efficiency and more energy-saving.
6. Battery cells: Auto/Set this item manually
7. Low Voltage Cutoff Threshold: OFF//NIMH 60%/3.0V/3.2V/3.4V/3.6V/3.8V
 For example: using 3 lithium batteries and setting 3.0V as the low voltage cutoff value, then the low voltage protection threshold is: 3*3.0 = 9.0V
8. Low Voltage Cutoff Type: Reduce Power/Cut Off Power
 Reduced power: When the voltage drops to the set low-voltage protection threshold, the ESC will reduce power to 70%.
 Cut Off power: When the voltage drops to the set low-voltage protection threshold, the ESC will cut off the power immediately.
9. BEC: 6V/7.4V/8.4V
 The OPTO ESC doesn’t have built-in BEC.
10. Acceleration: 0/1/2/3
11. Startup Power:1/2/3
12. Telemetry: RealTime/SUBS2
Entering The Programming Mode
1. Turn on the transmitter, move the throttle stick to the top position.
2. Connect the battery pack to ESC.
3. Wait for 2 seconds, the motor will emit special tone like “ beep-beep beep”
4. Wait for another 3 seconds, the motor will emit special tone like “123”, which means program mode entered.
Programming Items
Protection Function
Trouble Shooting
The speed controller can be connected to the motor by soldering directly or with high quality connectors. Always use new connectors, which should 
be soldered carefully to the cables and insulated with heat shrink tube. The maximum length of the battery pack wires shall be within 6 inches.
Solder controller to the motor wires.
Solder appropriate connectors to the battery wires. 
Insulate all solder connectors with heat shrink tubes.
Plug the “JR” connector into the receiver throttle channel.
Controller Red and Black wires connects to battery pack Red and Black wires respectively.