Ring Alarm Contact Sensor 2nd Gen
Top Pick
Ring

Ring Alarm Contact Sensor 2nd Gen

4.6

Best simple security upgrade for renters and homeowners seeking peace of mind.

These compact sensors provide immediate peace of mind by monitoring entry points throughout the home. They integrate seamlessly into an existing security ecosystem, offering a simple, tool-free setup that ensures windows and doors are always accounted for without cluttering the frame.

$14.99

In stock

at

Amazon

Who it's for

  • Homeowners wanting minimal visual impact on door and window frames
  • Users already invested in the Ring home security ecosystem
  • Busy households preferring low-maintenance security hardware

Who should skip it

  • Shoppers looking for standalone sensors without a central hub
  • Residents in large homes with significant distance from the base
  • Design-conscious users with dark-colored door or window frames

Performance breakdown

Installation Simplicity

Tool-free mounting makes securing doors and windows a five-minute task.

Excellent

Ecosystem Integration

Seamlessly syncs with existing Ring Alarm setups for unified home monitoring.

Excellent

Alert Responsiveness

Real-time notifications arrive instantly when a sensor state changes.

Excellent

Design Aesthetics

Compact, discreet profile blends unobtrusively into most door and window frames.

Excellent

Battery Longevity

Standard CR2032 batteries provide reliable, long-term power for consistent operation.

Excellent

Connectivity Reliability

Z-Wave protocol ensures stable, low-latency communication with the base station.

Excellent

Key Specs

Sensor Type

Contact Sensor

Connectivity

Z-Wave

Power Source

Battery (CR2032)

Indoor/Outdoor Placement

Indoor

System Compatibility

Android, iOS, Mac, Windows

Mounting Type

Tool-free adhesive or screw mount

Included Items

2 Sensors, Batteries

Condition

New

Color

White

Model

4SD2SZ-0EN0

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Ring Alarm Contact Sensor 2nd Gen

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Amazon
Amazon
In stock
$14.99
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eBay
eBay
In stock
$25.88
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Best Buy
Best Buy
In stock
$29.98
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P.C. Richard & Son
P.C. Richard & Son
Out of stock
$34.99
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