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Description
Matek Power Module PM12S-4ASpecifications Wide 9V to 55V Operating Input Range with TVS protection 2x independent Step Down Voltage Regulators OUT 1 Vx, 5V 6V 7. 2V 12V output options(5v default). 4A continuous, 5A Peak. ON OFF is controllable by PWM signal. OUT 2 5V (Fixed), 4A continuous, 5A Peak Output ripple: 20mV (VIN=50V, Output 5v @ 4A), 40mV (VIN=50V, Output 12V @ 4A), Size & Weight: 50 x 32 x 7mm, 18g Packing: 1x PM12S 4A (no wires) Settings 1. Set the OUT 1(Vx)
Specifications
- Wide 9V to 55V Operating Input Range with TVS protection
- 2x independent Step-Down Voltage Regulators
- OUT-1 Vx, 5V / 6V / 7.2V / 12V output options(5v default). 4A continuous, 5A Peak. ON/OFF is controllable by PWM signal.
- OUT-2 5V (Fixed), 4A continuous, 5A Peak
- Output ripple: 20mV (VIN=50V, Output 5v @ 4A), 40mV (VIN=50V, Output 12V @ 4A),
- Size & Weight: 50 x 32 x 7mm, 18g
- Packing: 1x PM12S-4A (no wires)
Settings
1. Set the OUT-1(Vx) voltage
- Output voltage indicators, 5V Red, 6V Green, 7.2V Green, 12V Blue
- Press and hold the button for 3 seconds to enter the setting of the OUT-1 voltage.
- The LED on the current output voltage will blink. then press button to choose the voltage between 5V(Red), 6V(Green), 7.2V(Green), 12V (Blue) .
- The value will be saved if no button action within 3 seconds.
2. PWM control
- PWM Freq & Range: 50Hz-330Hz, 900-2100
- OUT-1 Default output is ON if no PWM signal connected
- Connect the PWM pin and GND to a spare PWM channel on the receiver or flight controller.
- OUT-1 will be turned OFF when the auxiliary switch’s pwm value becomes higher than 1800. It will be turned ON when the value falls below 1200.
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- 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
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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
4.6 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 4
Awesome brow liner and gel
Color: 259 ASH BROWN, Size: 1 Count (Pack of 1)
Love this pen! Just wish there was a color inbetween the medium brown and the ash brown. I love the brow gel in it though! The pen is nice and makes hairlike strokes that make for a more naturally filled in brow. The gel holds in place all day!
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Reviewed in the United States on September 14, 2025
★★★★★ 5
Benissimo!
Color: 250 BLONDE, Size: 1 Count (Pack of 1)
Hands down the best brow pen I’ve used & I have used ALL of them! I love this for my almost non-existent brows. It’s easy to handle for precise hairlike application. Have subscribed to this it’s so good. Finally, one that’s the right color, doesn’t run out even after a month of use & is the BEST price. Maybelline for the win!
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Reviewed in the United States on February 27, 2026
★★★★★ 3
The colors are way off
Color: 259 ASH BROWN, Size: 1 Count (Pack of 1)
The ash brown is basically black. However, I do think the gel helps set the brow color and I have been using a ash blonde color and then applying the gel.
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Reviewed in the United States on February 9, 2026
★★★★★ 5
So Good!
Color: 262 BLACK BROWN, Size: 1 Count (Pack of 1)
This is my absolute favorite bow pen I've ever tried.
The brush tip is incredibly fine and makes each stroke a perfect hair like finish.
I tend to get heavy handed with other options like brow powders so having an option for thin hair like stokes makes it incredibly hard to taken it too far.
The tip doesn't dry out to the point of skipping or Inconsistency without you knowing its time to refresh it by capping and shaking, but I do find that it comes back refreshed and even better the more you repeat the capping and shaking step between brows.
Easy to hold and design.
I wasn't totally blown away with the brow gel it comes with attached to the pen when it comes to hold power. It doesn't flake at all and doesn't leave a cast of white or sheen to the brow, which is a plus. It's just a nice way to loosely set the brow after application.
There is some wiggle room with wiping the product off with a q tip if a mistake is made, but once the pigment is dry, it doesn't budge all day, even after intense exercise or humid conditions.
I'll be repurchased this like... now, and hope it never gets discontinued!
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Reviewed in the United States on April 10, 2024
★★★★★ 1
Defective product from Amazon.
Color: 255 SOFT BROWN, Size: 1 Count (Pack of 1)
I have used this product many times and I think it is a good product. I usually buy it at Target.
The product I received from Amazon was defective. The pen was totally dried out and I was not able to paint a brow. There was liquid in the brush side, but it is colorless and meant to be a finish to make the color last longer. Maybe just a one time fluke, but I'd purchase this elsewhere.
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Reviewed in the United States on June 7, 2026
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