Brand new in original packaging-

Ring Alarm Door/Window Contact Sensor (2-Pack) (2nd Gen)

Model # 4SD2SZ-0EN0

Expand your Ring Alarm system to secure each door and window in your home, and hear chirps as soon as they open. Ring Alarm Contact Sensors mount to any door or window frame in your home for easy, DIY installation. Connect them to your Ring Alarm and receive mobile alerts from the Ring App so you'll always be the first to know when something's ajar.

  • Requires ring alarm or ring alarm pro, sold separately
  • Get alerts on your phone and tablet when doors or windows are opened.
  • Monitor your home from any iOS or Android device.
  • Easy installation with no tools required
  • Includes two 3V CR2032 batteries
  • Mounts to door and window frames

Dimensions

Product Depth (in.)

0.55 in

Product Height (in.)

1.56 in

Product Width (in.)

2.09 in

Details

Color Family

White

Connectivity

Wireless (Wireless Network Transmission)

Decibel Rating (dB)

0 dB

Features

Audio Alert, Indicator Light

Hub Required

Proprietary Hub

Included

Batteries

Indoor/Outdoor

Indoor

Pack Size

2

Power Options

Battery

Power Source

Battery Operated

Product Weight (lb.)

0.147 lb

Remote Access

Remote Access

Requires Hub?

Requires Smart Hub

Sensor Location

Door, Window

Sensor Recognition

Motion

Sensor Technology

PIR

Smart Home

Smart Home Enabled

Smart Home Protocol

Z-Wave

Transmission Range (ft.)

250 ft

Voice Control Hub Required

No Voice Control

Works With

Alexa, Ring

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      • All items are brand new in original packaging unless stated otherwise