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
The HTZSAFE Solar Beam 300 ft is the better driveway alarm overall, rated 3.3 to 2.9. The HTZSAFE Solar Beam 300 ft leads on expandability and value. The HTZSAFE Solar Beam 300 ft costs $30 less ($119.99 vs $149.99).
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 4-Zone Relay
A solar beam kit for someone wiring driveway zones into an existing alarm or automation system.
Amazon $149.99$149.99
Which should you buy?
- Choose the HTZSAFE Solar Beam 300 ft for expandability (up to 32 sensors per receiver vs up to 4 sensors per receiver) and value ($119.99 per sensor ($119.99, 1 sensor) vs $149.99 per sensor ($149.99, 1 sensor)).
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 | HTZSAFE Solar Beam 300 ft | HTZSAFE Solar Beam 4-Zone Relay |
|---|---|---|
| Overall rating | 3.3/5 | 2.9/5 |
| Wireless range 30% | 73 2,640 ft claimed wireless range | 73 2,640 ft claimed wireless range |
| Value 25% | 37 $119.99 per sensor ($119.99, 1 sensor) | 28 $149.99 per sensor ($149.99, 1 sensor) |
| Features 25% | 40 solar-charged sensor, battery-powered receiver, per-sensor alerts | 40 relay or 12 V output, solar-charged sensor, per-sensor alerts |
| Expandability 10% | 100 up to 32 sensors per receiver | 25 up to 4 sensors per receiver |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| HTZSAFE Solar Beam 300 ft | HTZSAFE Solar Beam 4-Zone Relay | |
|---|---|---|
| Detection | ||
| Sensor type | Infrared break beam | Infrared break beam |
| Detection distance | 300 ft beam spacing | 300 ft beam spacing |
| System | ||
| Wireless range | 2,640 ft (claimed) | 2,640 ft (claimed) |
| Sensors in box | 1 | 1 |
| Receivers in box | 1 | 1 |
| Sensors per receiver | Up to 32 | Up to 4 |
| Price per sensor | $119.99 | $149.99 |
| Alerts | ||
| Phone alerts (Wi-Fi) | No | No |
| Receiver power | Plug-in with battery backup | - |
| Relay or 12 V output | No | Yes |
| Per-sensor alerts | Yes | Yes |
| Power and build | ||
| Sensor power | Solar, rechargeable | Solar, rechargeable |
| Sensor battery life | Rechargeable battery charged by solar | Battery powered and solar charged |