Pay in installments of $107.38 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Sep 1 - Sep 6
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
MikroTik GPEN21 Smart Media Converter with PoEThe MikroTik GPEN21 is a versatile smart power injector that functions as an advanced, software controlled repeater. It offers a wide array of features including PoE support, VLAN capabilities, and comprehensive network management tools, making it ideal for enhancing network connectivity in various environments. Features Smart Power Injector: Functions as an advanced software controlled repeater, providing power to uplink devices via PoE. Dual
The MikroTik GPEN21 is a versatile smart power injector that functions as an advanced, software-controlled repeater. It offers a wide array of features including PoE support, VLAN capabilities, and comprehensive network management tools, making it ideal for enhancing network connectivity in various environments.
Features
- Smart Power Injector: Functions as an advanced software-controlled repeater, providing power to uplink devices via PoE.
- Dual Ethernet Ports: Equipped with 2x 10/100/1000 Ethernet ports for flexible connectivity options.
- SFP Port: Includes 1x SFP port for fiber connectivity, allowing for high-speed data transmission.
- Interface Management: Offers interface management and monitoring for enhanced network control.
- Link Fault Detection: Features GPEN link fault detection to quickly identify and resolve connectivity issues.
- VLAN Support: Supports VLAN configurations for improved network segmentation and security.
- SNMP Reporting: Enables SNMP reporting for monitoring network performance and device status.
- Basic Traffic Shaping: Allows for basic traffic shaping to optimize bandwidth usage.
- Wall-Mountable: Can be securely mounted to a wall or communications cabinet for convenient installation.
Specifications
- Product Code: GPEN21
- Ethernet Ports: 2x 10/100/1000
- SFP Ports: 1x 1.25Gbps
- PoE Input: 802.3af/at
- PoE Output: Passive PoE up to 57V
- Operating Voltage: 12V - 57V
- Operating Temperature: -20°C to 70°C
- Dimensions: 92 x 104 x 24 mm
- Weight: 0.3 kg
- Certification: CE, EAC, ROHS
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
4.0 ★★★★★
Based on 10 reviews
Sort
Product Reviews
★★★★★ 4
IT WORKS, IT REALLY WORKS!
Size: 16oz, Size: 16oz
I carry a tire plug kit in my van. Low pressure light came on and quickly made my way to air pump. Checked out tire and was at least a 5/16" bolt right between tread, very easy to locate (hissing). Inflated tire, prepared plug, pulled out bolt, inserted plug done. Almost home light came on again. Used water soap and plug was still leaking. Tried double plug and still leaking, but would take days to trigger low pressure light. Tire still had decent tread and didn't have facilities to patch, so got a can of fix a flat. I have never believed in this stuff, but it worked. No low pressure warnings for about a month. Around here they would charge $50 for a patch, 2 .25 cent soft rubber plugs and fix a flat, problem resolved!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 25, 2025
★★★★★ 5
Buy it! Lifesaver!
Size: 16oz
Yes, buy it when you don't have a spare tire because you will need it!
I live in Florida and flat tires are just part of living here!
Saved my life twice already and is absolutely self explaining!
Cheaper then a spare tire, lighter than one too! Just throw it in your trunk and best case you will never need it but just in case!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 1
Difficult to use and eventually hose end broke
Size: 24oz, Size: 24oz
I purchased this can of Fix-A-Flat to fix, what I believe, is a rim leak on my truck tire which needs to be filled once every week or so. When I attempted to use the product I let some air out of the tire (down to 25 psi) so it would be easier to dispense the contents. The instructions on the can say to have the valve on the tire at the 6 o'clock...which I did as well.
When I attempted to make the connection using the swivel connector on the can's hose it was difficult. The hose on the can is very short and stiff and because it came coiled in the can's lid, did not want to straighten out making connecting it to the tire a very awkward process. It was hard to screw the hose end on the valve without it binding so it felt like it was cross-threading. I have machined aluminum valve caps and they go one very easily so I know the threads on the tire's valve stem are clean.
I finally did get it on and when I attempted to dispense the contents it filled the hose but that was about it. I could not see any contents flowing thru the hose at all. I assumed it was not on far enough so I took it off to try again and the contents sprayed everywhere showing it was indeed under pressure....just not going into the tire. After multiple tries the hose end eventually just broke off and stayed on the tire's valve stem. I was able to get it off, but at this point the can is useless to me.
Obviously I cannot and will not recommend this product. I have used this product before and had success, but that was when the hose was longer and wired to the side of the can making it much easier to use, versus how they are shipped now. I would recommend going with another product or possible going to a box store (which is what I plan to do) to find one that does not have this design. At the very least, if you do choose to disregard this review, I would try it with the tire's valve stem at the 3 or 9 o'clock position which might make it easier to thread the hose end on to the valve stem,.
Also, if you choose to go this route you might just be throwing your money away. I attempted to get a refund from Amazon and was directed to the manufacture's web site. From there you are directed to use the 800 number of leave a general message that is in no way connected to your Amazon purchase. Past experience tells me it will not be an easy process so it looks like I am out the $12.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2024
★★★★★ 5
This is a necessity for anyone that tries a car!!
Size: 20oz 6pk
I haven’t used this yet, but I bought a case to give to my family members. My friend who came outside to a flat tire. It was a Sunday in Utah so there was really no one that could fix it. Walmart told her to get this product. She had to drive home immediately following using this product (300 miles) It has been over two months now and my niece is still driving on that tire. It was a brand new tire that was costly so she decided to just wait and see how long this product will work. Great gift for anyone in the family that drives. This does not work on a blown tire. If you wake up in the morning and your tire is flat, or you get out of class and your tire is flat, just use this product and no calls need to be made.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 14, 2025
★★★★★ 5
Great product and great service
Size: 16oz
By all accounts it's a great product! It arrived and I feel more confident having it with me in the car.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
recommand products
22265CF 1/8 x 1/4 x 3/16 x 1-3/32 3 FLUTE SHORT LENGTH SPADE TIALN-FUTURA COATED 8% COBALT End Mill
18.63
21601TE 1/8 x 1/4 x 5/16 x 1-3/4 2 FLUTE REGULAR LENGTH 42 DEG HELIX STRAIGHT SHANK TIALN-EXTREME COATED CARBIDE FOR ALUMINUM End Mill
30.90
20524PF 3/4 x 3/4 x 1-5/8 x 3-7/8 3 FLUTE REGULAR LENGTH 60 DEG HELIX TIALN-FUTURA COATED ASP-30 End Mill
123.97
20579TC 5/16 x 5/16 x 13/16 x 2-1/2 3 FLUTE REGULAR LENGTH 60 DEG HELIX TICN-COATED CARBIDE End Mill
54.24
22281CN 1/4 x 1/4 x 3/8 x 1-13/32 3 FLUTE SHORT LENGTH SPADE TIN COATED 8% COBALT End Mill
17.09