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Many DP(Dual Power) servo section boards for choose as you see, but hard to choose the right one. Don't worry, This table will help you, according to the function of your planes need, then you will be easy to find the right one. The features of Rccskj Power box:

- Board Integrated CDI can remote Cut off your engine.
- Built BEC more convenient. BEC is better than UBEC, because it is linear.
- Dual power inputs effectively improve supply reliability.
- With Oled can easy to check the voltage.
- Only E3103 have sound and light alarm.

And a introduce video: E4104 DP Servo section board
          SKU


Function
E2101 E2102 E2103 E4104 E4105 E4106 E3102
Dual power input Yes Yes Yes Yes Yes Yes Yes
Input Voltage   4.8-13V 7-13V 5-13V 7-13V 6-13V 6-12.6V
Out put Voltage 4.8-12.6V  
4.8-8.4V(servo, default 5.2V)
  4.8-9.7V
(Default 5.2V)
4.8-9.7V
(Default 5.2V)
4.8-9.7V
(Default 5.2V)
Out put Current 0-30A 0-20A 0-20A 0-20A 0-20A(Max: 30A) 0-20A (Max: 30A) 0-30A
Indicator LED light LED light LED light OLED OLED OLED OLED
sound and light alarm
w/ BEC/UBEC No   UBEC BEC 20AUBEC
(Max:30A
20A BEC 30A BEC
(Max:40A
With CDI
 
No Yes Yes Yes Yes Yes Yes
Input channal 8 8 9 9 9 9 12
Output
Channal
16 16 18 18(1 for CDI 18(1 for CDI 18(1 for CDI 34(1 for CDI
Electric switch Yes Yes Yes Yes Yes Yes Yes
weight 70g 70g 103g 80g 80g 80g 180g
Dimension
(mm)
116*68*13 116*68*13 122*72*18 122*72*18 122*72*18 122*72*18 150*80*20