Hosmart Half-Mile 4-Sensor Kit
A four-sensor battery kit with the longest published warranty here, for buyers who would rather swap AAs once a year than rely on solar.
Amazon $131.99$131.99
The Hosmart Half-Mile 4-Sensor Kit is the better driveway alarm overall, rated 3.7 to 3.3. The Hosmart Half-Mile 4-Sensor Kit leads on value. The HTZSAFE Solar Beam 300 ft wins on expandability. The HTZSAFE Solar Beam 300 ft costs $12 less ($119.99 vs $131.99).
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.
HTZSAFE Solar Beam 300 ft
A low-cost solar break-beam for covering a wide gate or field entrance, within half a mile of the house.
Amazon $119.99$119.99
Which should you buy?
- Choose the Hosmart Half-Mile 4-Sensor Kit for value ($33 per sensor ($131.99, 4 sensors) vs $119.99 per sensor ($119.99, 1 sensor)).
- Choose the HTZSAFE Solar Beam 300 ft for expandability (up to 32 sensors per receiver vs up to 4 sensors per receiver).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every motion and beam sensors driveway alarm; a clear win is highlighted. How we rank explains each one.
| Factor weight | Hosmart Half-Mile 4-Sensor Kit | HTZSAFE Solar Beam 300 ft |
|---|---|---|
| Overall rating | 3.7/5 | 3.3/5 |
| Wireless range 30% | 73 2,640 ft claimed wireless range | 73 2,640 ft claimed wireless range |
| Value 25% | 89 $33 per sensor ($131.99, 4 sensors) | 37 $119.99 per sensor ($119.99, 1 sensor) |
| Features 25% | 35 battery-powered receiver, per-sensor alerts, adjustable sensitivity | 40 solar-charged sensor, battery-powered receiver, per-sensor alerts |
| Expandability 10% | 25 up to 4 sensors per receiver | 100 up to 32 sensors per receiver |
| Warranty 10% | 67 2-year warranty | 0 warranty not published, scored as none |
Specifications
| Hosmart Half-Mile 4-Sensor Kit | HTZSAFE Solar Beam 300 ft | |
|---|---|---|
| Detection | ||
| Sensor type | PIR motion | Infrared break beam |
| Detection distance | 30 ft | 300 ft beam spacing |
| Adjustable sensitivity | Yes | - |
| System | ||
| Wireless range | 2,640 ft (claimed) | 2,640 ft (claimed) |
| Sensors in box | 4 | 1 |
| Receivers in box | 1 | 1 |
| Sensors per receiver | Up to 4 | Up to 32 |
| Price per sensor | $33 | $119.99 |
| Alerts | ||
| Phone alerts (Wi-Fi) | No | No |
| Receiver power | Plug-in with battery backup | Plug-in with battery backup |
| Relay or 12 V output | No | No |
| Per-sensor alerts | Yes | Yes |
| Power and build | ||
| Sensor power | AA batteries | Solar, rechargeable |
| Sensor battery life | About a year on 4 AA batteries (not included) | Rechargeable battery charged by solar |
| Warranty | 2 years | - |