Mighty Mule MM371W
#6 in Single swingFull review
The mainstream DIY choice for a medium single driveway gate, with a real UL 325 listing. Buy the battery with it and check the length and weight chart first.
Amazon $344.06$344.06
The Mighty Mule MM371W is the better automatic gate opener overall, rated 3.3 to 2.9. The TOPENS A5131 costs $15.06 less ($329 vs $344.06).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
TOPENS A5131
#12 in Single swingFull review
A low cost single gate kit for a light or medium driveway gate near the house, where a safety listing is not required.
Amazon $329$329
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every single swing automatic gate opener; a clear win is highlighted. How we rank explains each one.
| Factor weight | Mighty Mule MM371W | TOPENS A5131 |
|---|---|---|
| Overall rating | 3.3/5 | 2.9/5 |
| Gate weight 20% | 50 gates up to 550 lb per leaf | 50 gates up to 550 lb per leaf |
| Gate length 15% | 60 gates up to 16 ft per leaf | 60 gates up to 16 ft per leaf |
| Safety listing 15% | 100 UL 325 listed | 0 no UL 325 listing published, scored as none |
| Price 25% | 75 $344.06 | 79 $329 |
| Warranty 25% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Mighty Mule MM371W | TOPENS A5131 | |
|---|---|---|
| Gate | ||
| Gate type | Single swing | Single swing |
| Heaviest gate | 550 lb | 550 lb |
| Longest gate | 16 ft | 16 ft |
| Time to open | 14 s | 15 s |
| UL 325 listed | Yes | - |
| Power | ||
| Power | Battery, solar ready | Battery, solar ready |
| Motor voltage | 12 V | 24 V |
| Build | ||
| Remotes included | 1 | 2 |
| Weight | 23 lb | 23.4 lb |
| Warranty | 1 year | 1 year |