Dakota Alert Smart Break Beam 4000
A solar break-beam with phone alerts, for covering a wide gateway or property line that a single motion sensor can’t reach across.
Amazon $289.99$289.99
The Dakota Alert Smart Break Beam 4000 rates 3.5 among motion and beam sensors driveway alarms; the Dakota Alert Smart DUAL Probe 4000 rates 3.4 among vehicle-only sensors ones. The Dakota Alert Smart Break Beam 4000 costs $80 less ($289.99 vs $369.99).
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.
Dakota Alert Smart DUAL Probe 4000
The most capable kit here, for a gated property or business that wants direction-aware phone alerts and outputs to drive other equipment.
Amazon $369.99$369.99
Scores side by side
These two sit in different sensor type classes (motion and beam sensors and vehicle-only sensors), and each is scored against the reference points for its own class, so a rating says how well each does among its own sensor type peers. How we rank explains each factor.
| Factor weight | Dakota Alert Smart Break Beam 4000 | Dakota Alert Smart DUAL Probe 4000 |
|---|---|---|
| Overall rating | 3.5/5 | 3.4/5 |
| Wireless range 30% | 100 1 mile claimed wireless range | 100 1 mile claimed wireless range |
| Value 25% | 1 $289.99 per sensor ($289.99, 1 sensor) | 0 $369.99 per sensor ($369.99, 1 sensor) |
| Features 25% | 65 phone alerts over Wi-Fi, relay or 12 V output, solar-charged sensor, per-sensor alerts | 50 phone alerts over Wi-Fi, relay or 12 V output, per-sensor alerts |
| Expandability 10% | 75 up to 16 sensors per receiver | 75 up to 16 sensors per receiver |
| Warranty 10% | 33 1-year warranty | 33 1-year warranty |
Specifications
| Dakota Alert Smart Break Beam 4000 | Dakota Alert Smart DUAL Probe 4000 | |
|---|---|---|
| Detection | ||
| Sensor type | Infrared break beam | Magnetic probe |
| Detection distance | 300 ft beam spacing | - |
| System | ||
| Wireless range | 1 mile (claimed) | 1 mile (claimed) |
| Sensors in box | 1 | 1 |
| Receivers in box | 1 | 1 |
| Sensors per receiver | Up to 16 | Up to 16 |
| Price per sensor | $289.99 | $369.99 |
| Alerts | ||
| Phone alerts (Wi-Fi) | Yes | Yes |
| Receiver power | Plug-in | Plug-in |
| Relay or 12 V output | Yes | Yes |
| Per-sensor alerts | Yes | Yes |
| Power and build | ||
| Sensor power | Solar, rechargeable | CR123A batteries |
| Sensor battery life | Battery operated, charged by two solar panels on each beam | A year or more on three CR123A batteries (included) |
| Operating temperature | -30 to 120°F | -30 to 120°F |
| Warranty | 1 year | 1 year |