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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
4.7 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Works for a smaller area
Color: Black
Easy to assemble. Fast delivery
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Reviewed in the United States on June 1, 2026
★★★★★ 3
Below expectation
Color: Black
Not quite what I was expecting but it can be used
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Reviewed in the United States on May 6, 2026
★★★★★ 4
Good
Color: Grey
Works as it should, but one of the brackets on the leg broke while setting up. Super glue is holding it in just fine.
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Reviewed in the United States on March 5, 2026
★★★★★ 1
Not good for putting away daily
Color: Grey
This product may work of you are doing a full install, but is terrible for putting up and taking down daily. I have only had it 2 months and it is falling apart and will not stand straight.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Privacy at ease!
Color: Black, Color: Black
This is exactly what we needed for our large house and bedroom sharing with the kids. People need privacy and this can be tucked away when it isn't being used. Perfect!
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Reviewed in the United States on May 13, 2026