Mighty Mule MM571W
#1 in Single swingFull review
A heavy duty single gate kit for long or heavy farm and estate gates that wants a UL 325 listing. Check the length and weight chart for gates over 8 ft.
Amazon $443.04$443.04
The Mighty Mule MM571W is the better automatic gate opener overall, rated 3.6 to 2.8. The Mighty Mule MM571W leads on price and warranty. The Mighty Mule MM571W costs $205.96 less ($443.04 vs $649).
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.
ALEKO AS600 Smart Kit
#13 in Single swingFull review
A single gate kit that arrives with the keypad, photo eyes and app control most buyers add later, for a heavy gate on house power.
Amazon $649$649
Which should you buy?
- Choose the Mighty Mule MM571W for price ($443.04 vs $649) and warranty (1.5-year warranty vs 1-year warranty).
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 MM571W | ALEKO AS600 Smart Kit |
|---|---|---|
| Overall rating | 3.6/5 | 2.8/5 |
| Gate weight 20% | 87 gates up to 850 lb per leaf | 89 gates up to 880 lb per leaf |
| Gate length 15% | 80 gates up to 18 ft per leaf | 80 gates up to 18 ft per leaf |
| Safety listing 15% | 100 UL 325 listed | 0 no UL 325 listing published, scored as none |
| Price 25% | 55 $443.04 | 26 $649 |
| Warranty 25% | 12 1.5-year warranty | 0 1-year warranty |
Specifications
| Mighty Mule MM571W | ALEKO AS600 Smart Kit | |
|---|---|---|
| Gate | ||
| Gate type | Single swing | Single swing |
| Heaviest gate | 850 lb | 880 lb |
| Longest gate | 18 ft | 18 ft |
| Time to open | 14 s | - |
| UL 325 listed | Yes | - |
| Power | ||
| Power | Battery, solar ready | Battery, solar ready |
| Battery | 7 Ah | - |
| Motor voltage | 12 V | 24 V |
| Build | ||
| Remotes included | 1 | 2 |
| Weight | 30 lb | - |
| Warranty | 1.5 years | 1 year |