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$17 – $25
Slim Z-Wave door/window contact sensor with 3-year battery life. Part of Ring Alarm system. Works with Alexa.
You want to expand Ring security coverage affordably
Reasonable per-sensor pricing. Available in multi-packs. Good value for whole-home door/window coverage.
You need flexible mounting options
Works offset from each other or mounted sideways. Slide-off cover for easy battery replacement. No prying needed.
You want instant open/close alerts on your phone
Real-time push notifications when doors/windows open. Part of Ring security ecosystem. Works with Ring Protect.
You have Ring Alarm system and need door/window monitoring
Seamless Ring integration. Z-Wave 700 chip for improved range and battery. Slim design fits any frame. 3-year battery life.
You do not have Ring Alarm Base Station
Requires Ring Alarm Base Station to function. Cannot work standalone or with other Z-Wave hubs.
You want HomeKit or smart home automation
No HomeKit, Google Home, or SmartThings integration. Ring/Alexa ecosystem only. No Matter support.
You have sensors far from Base Station without extender
250ft open-air range reduced by walls. Sensors go offline without adequate signal. Range Extender may be needed.
Sensors frequently go offline, especially those far from Base Station. Z-Wave signal blocked by walls and metal.
Ring CommunityBattery life significantly shorter than 3-year spec if sensor is far from Base Station or door is used frequently.
Ring CommunitySensors frequently go offline
commonCause: Z-Wave range limitations. Walls reduce 250ft range. Signal interference from other devices.
Battery drains faster than 3-year spec
commonCause: Frequent door usage and weak signal cause more transmissions and faster drain.
Installing sensors too far from Base Station without Range Extender
Sensors go offline frequently. Missed alerts. Battery drains faster from retries.
Tip: Install Range Extender between Base Station and distant sensors. Test signal before mounting.
Not testing sensor signal before permanent mounting
Discovers dead zone after adhesive applied. Difficult to reposition.
Tip: Use Ring app to check Z-Wave signal strength before using adhesive. Relocate if weak signal.
All functionality requires Ring cloud. Alerts, app control, event history, monitoring.
Basic alarm triggering may work locally but limited functionality. Remote access requires cloud.
Tested with up to 100 devices
Z-Wave 700 chip for improved range. 250ft open-air range. CR123A battery rated for 3 years. Slim profile fits most frames.
Requires Ring Base Station. Range reduced by walls. Battery life varies with usage. May need Range Extender.
Eve Door & Window (Matter)
If: Want HomeKit/Matter smart home integration
Aqara Door and Window Sensor P2
If: Want Thread/Matter with Android app support
SimpliSafe Entry Sensor
If: Want alternative security system with better monitoring options
You have Ring Alarm and need door/window sensors
Seamless Ring integration. Z-Wave 700 chip. Good multi-pack pricing. 3-year battery life.
You want HomeKit or smart home automation
No HomeKit/Matter support. Ring ecosystem only. Use Eve or Aqara for smart home automation.
You have a large home without Range Extender
Z-Wave range limited by walls. Sensors will go offline. Budget for Range Extender ($25).
Remove battery, hold tamper button while reinserting battery. Hold until LED flashes. Will need to re-pair in app.
Source: Ring SupportNo. Ring Alarm does not support HomeKit, Matter, Google Home, or SmartThings. Alexa only.
Source: Ring FAQSensor may show "state unknown" or malfunction after going offline. May require battery pull and re-pair.
Ring CommunityCorrupt firmware can cause persistent offline issues. Factory reset required - press tamper button during battery insert.
Ring SupportNo HomeKit or smart home platform support
widespreadCause: Ring ecosystem lock-in. Amazon does not support cross-platform compatibility.
State unknown errors requiring re-pair
occasionalCause: Firmware corruption or signal loss. Factory reset and re-pair usually fixes.
Range Extender required for larger homes
commonCause: Z-Wave signal degrades through walls. Extra $25 for Range Extender accessory.
Expecting 3-year battery life on frequently-used doors
Battery dies within 1-2 years. Sensor goes offline unexpectedly.
Tip: Monitor battery status in app. High-traffic doors drain faster. Keep spare CR123A batteries.
Door/window open/close events, timestamps, battery status, alarm history.
Amazon/Ring privacy concerns. Cloud-dependent. Law enforcement data sharing history.
You want to monitor all doors and windows affordably
Multi-packs offer good value. Slim design fits any frame. Easy slide-off battery cover.
Rated for 3 years with CR123A battery. Actual life shorter on frequently-used doors or weak signal areas.
Z-Wave range limited by walls. Move closer to Base Station or add Range Extender. Try battery pull and re-pair.
Source: Ring SupportYes, requires Ring Alarm Base Station. Cannot work standalone or with other Z-Wave hubs.
Source: Ring Product Page