1: Stepper Motor Driver KL-8078
Price: $109.0 Heat Sink is included.
Features:
Specification
1:  High Performance                         
2:  Supply Voltage to +80VDC, 7.8A
3:  Automatic Idle-Current Reduction
4:  Micro step Resolutions Up to 51,200 Steps/Rev.
See detail in specification
5: Optically Isolated Signal I/O
6: Inaudible 20KHz Chopping Frequency
7: TTL Compatible
8: 14 Selectable Resolutions in Decimal & Binary
9:  Mixed-Decay Current Control For Less Motor Heating
10: Over-Current, Over-Voltage & Short-Circuit Protection
11: Suitable for 4, 6, 8 wires motors
12: Size: L x W x H : 115 x 97 x 31mm
One Year Warrenty

1.1 KL-8056  Bipolar Stepper Motor Driver
Heat Sink is included.:
Speification

SPECIFICATIONS: $92/pcs
Supply Voltage 20 up to 80 V DC
Output Current 2.8   upto  5.6 A
Step Modes 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64
Suitable for 4, 6, 8 wires motors
Current Adjustment via DIP Switches
Clock Frequency 0 .. 400 kHz max.
Pulse Width (Clock) min. 1.25 μs high/low
Ambient Temperature 0°C .. 50°C,  Insure the driver
temperature <65°C

FEATURES:
- Thermal protection
- Short circuit and wrong polarity protection
- Optoisolated signal input

One Year Warrenty

2: KL- 5056 Microstepping Driver
Heat Sink is included., $92/pcs
Specification
Features of this driver
* Supply voltage up to +50VDC, current output up to 5.6A peak
* Optically isolated input signals, pulse frequency up to 400 KHz
*         Automatic idle-current reduction
*         3-state current control for less motor heating
*         16 selectable resolutions in decimal and binary
*         Suitable for 4,6,8 lead motors
*         Stepping on upward or downward pulse edge (selectable)
*         DIP switch current setting with 8 different values
*         Over-voltage and short-circuit protection
One Year Warrenty

3: KL- 5042 Microstepping Driver, Heat Sink is included., $78/pcs  
Specification
Features of this driver                    
*  Supply voltage up to +50VDC, current output up to 4.2A peak
*  Optically isolated input signals, pulse frequency up to 400 KHz
*         Automatic idle-current reduction
*        3-state current control for less motor heating
*         16 selectable resolutions in decimal and binary
*         Suitable for 4,6,8 lead motors
*         Stepping on upward or downward pulse edge (selectable)
*         DIP switch current setting with 8 different values
*         Over-voltage and short-circuit protection       
        
One Year Warrenty
                     

3a: KL- 4030 Microstepping Driver, Heat Sink is included, $59.95
/pcs
Specification
Features of this driver
*         Voltage up to 24 to 40VDC, current output up to 3.0 A
*         Selectable resolutions, 1,1/2, 1/4, 1/8, 1/16, 1/32, 1/64
*         Suitable for 4,6,8 lead motors
*         DIP switch current setting with  different values
*         Over voltage, heat and short-circuit protection
One Year Warrenty                                                            
   

4: KL-6050 Microstepping Driver, Heat Hink is included, $82.95
Specification
Features of this driver
* Supply voltage up to 60VDC, current output up to 5.0 A peak
*  Resolutions: 1/2,1/4,1/5, 1/8,1/10, 1/25, 1/32, 1/50, 1/64,   
1/100, 1/128, 1/200, 1/256
* Over Voltage, Over Heat, Over Current Protection
* Suitable for 4,6,8 lead motors
* DIP switch current setting
One Year Warrenty


5: Stepper Motor Driver KL-8082
(out of stock)
Price: $129.0 Heat Sink is included.
Features:
1:  High Performance                         
2:  Supply Voltage to +80VDC, 8.2A
3:  Automatic Idle-Current Reduction
4:  Micro step Resolutions Up to 51,200 Steps/Rev.
See detail in specification
5: Optically Isolated Signal I/O
6: Inaudible 20KHz Chopping Frequency
7: TTL Compatible
8: 14 Selectable Resolutions in Decimal & Binary
9:  Mixed-Decay Current Control For Less Motor Heating
10: Over-Current, Over-Voltage & Short-Circuit Protection
11: Suitable for 4, 6, 8 wires motors

One Year Warrenty


6:  KL-11078 Microstepping Driver, Heat Sink is included. :  
Specification
Low heating for motor & driver
Supply voltage AC 80-220V
TTL compatible inputs
Automatic idle-current reduction
Output current up to 7.8A peak
Input frequency up to 400 kHz
Opto-isolated inputs
16 selectable microstep resolutions up to 10000 steps/rev
Suitable for any 2-phase and 4-phase stepping motors
DIP switch current setting
Price: $199/pcs
One Year Warrenty
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Keling Technology, Inc

Typical Wiring
Diagram for KL-8078

Wiring Diagram for
KL-5056, KL-5042
Wiring Diagram
for KL-4030
Typical KL-11078
Wring Diagram
Typical Wiring
Diagram for KL-8056