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SKU: 1187881
  1. 32-bit ARM Cortex M4 MCU @ 80 MHz.
  2. Current: 20A/25A
  3. Voltage: 7.4~14.8V
  4. BLHeli D-short 2-4S
  5. BLHeli-S is a firmware is open source program
  6. Easy to install with supper small size and light weight


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Brand: Generic
Category: (ESC) Drone Speed Controller

This is BLHeli-S20A-D-A.

In the market there mainly 3 type of ESC are available 1) Oneshort ESC, 2) Opto ESC, 3) D-Short ESC. So this is D-Short ESC this best drone flight controller for your drone project it gives power to BLDC motor to gain quality of  speed, It use BLHeli technology. D-Shot is a protocol that flight controllers use for communicating with ESCs. It stands for ‘Digital Shot’. It is a new digital communication protocol developed by Flyduino in collaboration with Beta flight as an alternative to Oneshot and Multishot. Oneshot and Multishot (and standard PWM) all use analogue signals This is the fastest ESC protocol among all the above with a maximum frequency of 32 kHz. It is 10 times faster than Oneshot125

Electronic speed controllers (ESCs) are devices that allow drone flight controllers to control and adjust the speed of the aircraft’s electric motors. A signal from the flight controller causes the ESC to raise or lower the voltage to the motor as required, thus changing the speed of the propeller, It’s helps prevent a vehicle from skidding – and the driver from losing control of his or her vehicle – when turning a corner, braking sharply or making a sudden maneuver. ESC technology automatically activates the brakes to help steer the vehicle in the right direction


  1. EFM8BB21F16G MCU for great powerful preformation, 48Mhz
  2. BLHeli-S open source program
  3.  Highlight led power-on display status
  4. Support Dshort150/300/600, Oneshort, 125 Oneshort42, MultiShort modes
  5. Ultra-low internal resistance MOS for less heat and supper Hight stability
  6. Easy to install with supper small size and light weight
  7. Hummingbird BLHeli-s ESC designed for competition FPV drone
  8. Compatible with various flight controllers and support single frequency up to 621Hz in regular signal-receiving mode

Packages includes:

1 x BLHeli D-short 2-4S 20A ESC speed controller

1 x User Manual

SKU: 1187881 Category:

32-bit ARM Cortex M4 MCU @ 80 MHz


2-5S input Maximum input 6S (close brake)

Operating Current


Operating Voltage



600.000 maximum rotational field speed (up to 500000 recommended)




All inputs and outputs are protected against overvoltage (~30V) and undervoltage (~-30V). 3,3 and 5V capable



Telemetry capability

(voltage, current, temperature, speed)

Over-temperature protection

(reduces the maximum output when hotter than 100 ° C)

Drive signal support

Dshot150/300/600/1200, MultiShot, OneShot drive signal



Battery Cell

2-4Lipo Cell battery

Shipping Weight 0.009 kg
Shipping Dimensions 12 × 10 × 1 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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User Manual

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Country Of Origin: China