Betterlink NS001 Solar 4-Sensor Kit
A four-sensor solar kit whose sensors can also scare off visitors with their own siren and light.
Amazon $109.99$109.99
PIR motion2,640 ft4
3.5/5
A solar break-beam with phone alerts, for covering a wide gateway or property line that a single motion sensor can’t reach across.
- Infrared break beamSensor
- 1 mile (claimed)Wireless range
- 1Sensors in box
- Phone app, Chime receiver, relay outputAlerts
Check price at Amazon$289.99
Price checked November 7, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Beam spans up to 300 ft, enough to cover a wide entrance or a field edge
- Solar-charged beams, with no batteries to swap
- Phone alerts plus relay outputs
Cons
- Two posts to line up across the opening
- Trips on anything that breaks the beam, people and animals included
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 | Smart Break Beam 4000 |
|---|---|
| Detection | |
| Sensor type | Infrared break beam |
| Detection distance | 300 ft beam spacing |
| System | |
| Wireless range | 1 mile (claimed) |
| Sensors in box | 1 |
| Receivers in box | 1 |
| Sensors per receiver | Up to 16 |
| Price per sensor | $289.99 |
| Alerts | |
| Phone alerts (Wi-Fi) | Yes |
| Receiver power | Plug-in |
| Relay or 12 V output | Yes |
| Per-sensor alerts | Yes |
| Power and build | |
| Sensor power | Solar, rechargeable |
| Sensor battery life | Battery operated, charged by two solar panels on each beam |
| Operating temperature | -30 to 120°F |
| Warranty | 1 year |
Alternatives in this sensor type
eMACROS Pro3 Wi-Fi 2-Sensor Kit
The cheapest way to get driveway alerts on your phone with two solar sensors, for a home on 2.4 GHz Wi-Fi.
Amazon $89.99$89.99
PIR motion2,600 ft2
Dakota Alert MTPR-4000
A one-mile motion kit with a pocket receiver, for people who spend the day outside or in a workshop rather than by a wall chime.
Amazon $79.99$79.99
PIR motion1 mile1
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