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
PIR motion2,640 ft4
3.6/5
A one-mile motion kit with a relay-equipped receiver, for buyers who want a chime now and the option to wire in lights or a siren later.
- PIR motionSensor
- 1 mile (claimed)Wireless range
- 1Sensors in box
- Chime receiver, relay outputAlerts
Check price at Amazon$74.99
Price checked November 7, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Claimed one-mile range for long drives and outbuildings
- Receiver relay and 12 V outputs can trigger a siren, light or alarm panel
- Takes up to 16 sensors, each with its own tune
Cons
- No phone alerts
- Sensor needs a 9 V battery, sold separately
- Motion sensor also trips on deer and other large animals
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 | DCMA-4k Plus |
|---|---|
| Detection | |
| Sensor type | PIR motion |
| Detection distance | 100 ft |
| System | |
| Wireless range | 1 mile (claimed) |
| Sensors in box | 1 |
| Receivers in box | 1 |
| Sensors per receiver | Up to 16 |
| Price per sensor | $74.99 |
| 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 | 9 V battery |
| Sensor battery life | A year or more on one 9 V battery (not included) |
| Operating temperature | -30 to 120°F |
| Warranty | 1 year |
Alternatives in this sensor type
eMACROS Pro 4 Wi-Fi 2-Sensor Kit
A Wi-Fi solar kit whose base keeps alerting through an outage, for homes where the power drops now and then.
Amazon $99.99$99.99
PIR motion2,600 ft2
HTZSAFE Solar Motion 4-Sensor Kit
Four solar motion sensors for watching a driveway, gate, path and shed at once, with nothing to recharge.
Amazon $119.99$119.99
PIR motion2,640 ft4
Compare
Compare the Dakota Alert DCMA-4k Plus with any other driveway alarm →
More from Dakota Alert: every Dakota Alert product ranked.