Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
Automatic Controller GCU-20 for Generator Control UnitGCU 20 Automatic Engine and Generator Control Unit has many useful functions like annunciator alarm output and selectable EM81 EM121 MPU signal for speed sensing. It's suitable for pump engine control. GCU 20 also provide IDLE control for electronic governors. Features: Microprocessor based design Universal LED graphic interface, displays generator status and failures Modular design, quick installation With annunciator alarm output Selectable MPU
GCU-20 Automatic Engine and Generator Control Unit has many useful functions like annunciator alarm output and selectable EM81 / EM121 MPU signal for speed sensing. It's suitable for pump engine control. GCU-20 also provide IDLE control for electronic governors.Features:
Microprocessor based design
Universal LED graphic interface, displays generator status and failures
Modular design, quick installation
With annunciator alarm output
Selectable MPU signal for speed sensing
Suitable for pump engine control
With lamp test function for all front panel LEDs and annunciator lamps
Provide IDLE control for Elec. governors
Five adjustable time delay potentiometers
Six DIP switches for setting different engine parameters
Specification:
DC Supply:Voltage 9 to 36 Vdc
Alternator Input Range:
Voltage 5 to 300 Vac
Frequency 50/60 Hz
MPU Signal Input Range:+/-2V to 70V Peak
Rated MPU Frequency:100 to 10,000 Hz
Fuel Solenoid Signal Output:10 Amp @ 12/24 Vdc
Start Signal Output:10 Amp @ 12/24 Vdc
Annunciator Output:300 mA @ 12/24 Vdc
Power Consumption:Under 3 watts
Protection and Alarm Status Indicators:
Start Failure
High Water Temp.
Low Oil Pressure
No Speed Signal
Overspeed
Underspeed
Extra Prog. Input
Adjustable Timers
Engine Pre-Heat:2 to 30 seconds
Starter Cranking Time:1 to 15 seconds
Energize to STOP:1 to 15 seconds
Engine Idle (Governor):0 to 300 seconds
Engine Cool-Down:0 to 300 seconds
Environment
Operating Temperature :-20 to +60 °C
Storage Temperature:-35 to +85 °C
Relative Humidity:Less than 90%
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 2051 reviews
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Product Reviews
★★★★★ 5
Same sizes but different fits
Color: Light Green-new, Size: 32W x 32L
Great color and good fit. Feels more like a Jean. I bought two pair-exact same size. 32w x 32 length. Light green was exactly what I wanted. The maroon red was more like a jegging than jeans. Not what I wanted. Supposedly same style - so just be aware fits were completely different!
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Reviewed in the United States on May 1, 2026
★★★★★ 4
Good product with quality-control issues
Color: Dark Grey, Size: 31W x 31L
I really like these jeans. I own them in almost every color they offer, but the manufacturing consistency is hit or miss. The latest pair I bought has a much smaller pocket opening than the others.
I also always order the same size (31×31), but when I got the red pair they were ridiculously long, more like a 31×36.
And the first khaki pair I bought had pockets about half as deep as the rest. My iPhone would literally stick out of them.
That said, for the price and overall look, they’re still a solid buy.
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Reviewed in the United States on February 15, 2026
★★★★★ 5
Comfortable
Color: Deep Brown, Size: 34W x 32L
Nicely fit.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Just buy. You will want more in different colors
Color: Lemon Yellow, Size: 40W x 32L
Excellent pants. Super comfy
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Reviewed in the United States on May 20, 2026
★★★★★ 5
HIGHLY RECOMMENDED!
Color: Deep Brown, Size: 34W x 32L
It fits so well and true to size. The quality of the fabric is commendable. I will surely buy again.
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Reviewed in the United States on May 20, 2026
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