2A:
Specifications:

Input supply voltage:1.8V-15VDC
The max output power:30W
The max continuous output current :2A
Duty Cycle adjustable: 0%-100%
Size: approx. 32*32*15mm/1.25*1.25*0.59''

Note:

DC motor speed regulator DC power supply, do not be directly connected to household 220V AC

Features:

This Brand New 1803BK DC Motor Speed Controller allows controlling the direction of a DC the motor using a Pulse-Width-Modulated (PWM) DC voltage with a Duty Cycle fully the product adjust from 0%-100%.
With a self-recovery fuse 2A and a Power-On LED light.
Enable to provide a continuous current of 2A to your DC motor or other DC load.


3A

Specifications:

Input power supply: DC 6 V-28 V
Maximum output power: 80 W
Maximum continuous output current: 3A
Adjustable working cycle: 0%-100%

Instructions:

One. connect your DC (or load) engine to the engine terminals as specified in the wiring diagram.
2. connect a voltage of 10 V-36 V DC to the circuit that makes sure the correct polarity of the connection. Note that the voltage applied to the engine will be a voltage source applied to the circuit. It is recommended to add a proper line fuse rating with positive feed in order to protect the circuit from any possible short circuits.
THREE. Now you can control the engine speed through a pot.



5A:

Specifications:

Operating voltage: DC4.5V-35V
Output current: 0-5A
Output power: 90W (max)
Quiescent current: 7uA (standby)
PWM duty cycle: 1% -100%
PWM frequency: 20khz
Size: 30mm x 26mm x 14mm (Without Handle)

Precautions:

DC motor governor input is DC, can not directly connected to the AC (for example: home 220V AC), otherwise it will burn!
DC power supply positive and negative terminals do not reverse, otherwise the governor may be damaged.
The motor can be positive or negative, when the direction of operation and expectations do not match, you can adjust the line order to change the direction.
Adjust the potentiometer knob to change the governor output duty cycle, the motor speed changes.

10A:

Specifications:

Operating voltage: DC4.5V-35V
Output current: 0-5A
Output power: 90W (max)
Quiescent current: 7uA (standby)
PWM duty cycle: 1% -100%
PWM frequency: 20khz
Size: 30mm x 26mm x 14mm (Without Handle)

Precautions:

DC motor governor input is DC, can not directly connected to the AC (for example: home 220V AC), otherwise it will burn!
DC power supply positive and negative terminals do not reverse, otherwise the governor may be damaged.
The motor can be positive or negative, when the direction of operation and expectations do not match, you can adjust the line order to change the direction.
Adjust the potentiometer knob to change the governor output duty cycle, the motor speed changes.