US Automatic Sentry 300
#5 in Single swingFull review
A commercial grade, UL 325 listed single gate opener with a long warranty for buyers who value proven parts support over capacity per dollar.
Amazon $1,395$1,395
The US Automatic Sentry 300 rates 3.2 among single swing automatic gate openers; the JUJIANG C01 Solar Dual rates 2.6 among dual swing ones. The JUJIANG C01 Solar Dual costs $975.01 less ($419.99 vs $1,395).
JUJIANG C01 Solar Dual
#6 in Dual swingFull review
A low cost complete solar kit for a light pair of gates far from power. Heavier or longer gates need a bigger opener.
Amazon $419.99$419.99
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different gate type classes (single swing and dual swing), and each is scored against the reference points for its own class, so a rating says how well each does among its own gate type peers. How we rank explains each factor.
| Factor weight | US Automatic Sentry 300 | JUJIANG C01 Solar Dual |
|---|---|---|
| Overall rating | 3.2/5 | 2.6/5 |
| Gate weight 20% | 24 gates up to 400 lb per leaf | 32 gates up to 440 lb per leaf |
| Gate length 15% | 100 gates up to 20 ft per leaf | 20 gates up to 12 ft per leaf |
| Safety listing 15% | 100 UL 325 listed | 0 no UL 325 listing published, scored as none |
| Price 25% | 0 $1,395 | 86 $419.99 |
| Warranty 25% | 50 3-year warranty | 0 1-year warranty |
Specifications
| US Automatic Sentry 300 | JUJIANG C01 Solar Dual | |
|---|---|---|
| Gate | ||
| Gate type | Single swing | Dual swing |
| Heaviest gate | 400 lb | 440 lb |
| Longest gate | 20 ft | 12 ft |
| Time to open | 16 s | - |
| UL 325 listed | Yes | - |
| Power | ||
| Power | Battery, solar ready | Solar (panel included) |
| Solar panel | - | 20 W |
| Battery | - | 8 Ah |
| Motor voltage | 12 V | - |
| Build | ||
| Remotes included | 2 | 2 |
| Warranty | 3 years | 1 year |