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
Magnetic probe1 mile1
3.1/5
For a drive with steady traffic where knowing whether someone is coming or going matters, such as a farm or business entrance.
- Magnetic probeSensor
- 1 mile (claimed)Wireless range
- 1Sensors in box
- Chime receiver, relay outputAlerts
Check price at Amazon$329.99
Price checked November 7, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Two probes tell an arriving vehicle from a leaving one
- Senses only vehicles, so no false alarms from deer
- Relay outputs can open a gate or switch lights by direction
Cons
- Two probes to bury beside the drive
- No phone alerts
- Most expensive non-Wi-Fi kit here
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its sensor type. How we rank explains each one.
Specifications
| Model number | DUAL 4K Plus |
|---|---|
| Detection | |
| Sensor type | Magnetic probe |
| System | |
| Wireless range | 1 mile (claimed) |
| Sensors in box | 1 |
| Receivers in box | 1 |
| Sensors per receiver | Up to 16 |
| Price per sensor | $329.99 |
| Alerts | |
| Phone alerts (Wi-Fi) | No |
| Receiver power | Plug-in |
| Relay or 12 V output | Yes |
| Per-sensor alerts | Yes |
| Power and build | |
| Sensor power | CR123A batteries |
| Sensor battery life | A year or more on three CR123A batteries (included) |
| Operating temperature | -30 to 120°F |
| Warranty | 1 year |
Alternatives in this sensor type
Dakota Alert DCPA-4k Plus Probe
The classic buried-probe kit for a long rural drive where you want to hear about cars and trucks and ignore wildlife.
Amazon $259.99$259.99
Magnetic probe1 mile1
Mighty Mule FM231
A low-cost buried vehicle sensor for a short driveway where the house sits within a few hundred feet of the sensor.
Amazon $67.98$67.98
Magnetic probe400 ft1
Compare
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