Home Sensors & Motion Detectors
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37,525 Results
- $139.00or Best OfferFree shipping
- $40.49 to $157.41Was: $174.90was - US $174.90$5.00 shipping43 sold
- $36.44 to $141.67Was: $103.41was - US $103.41$5.00 shipping13 sold
- $79.99or Best OfferFree shipping201 sold
Official WYZE Manufacturer ✅✅30 Day Warranty✅✅Certified - Refurbished · Wyze$12.32Free shipping57 sold- $79.99or Best OfferFree shipping3 watching
- $20.00or Best Offer$4.44 shipping
- New (Other) · Ring$40.00Free shipping
- $19.99Free shipping30 sold
- $24.99or Best OfferTrending at $55.00Free shipping
- $29.99$10.00 shipping
- Brand New · Unbranded$17.64Was: $19.60was - US $19.60or Best OfferFree shipping46 sold
- Brand New · SimpliSafe$13.95Free shipping897 sold
- Parts Only · Linear$500.00or Best Offer$20.00 shipping
- $26.99 to $98.99Was: $49.99was - US $49.99$5.00 shipping7 sold
- $349.00or Best Offer$9.39 shipping
- New (Other) · Smarthome$109.90$10.00 shipping
- VISIT MY STORE AND SAVE $$$ ON BULK AND LOT SALEOpen Box$109.00Free shipping139 sold
- $175.00or Best Offer$13.85 shipping
- $28.00Free shipping126 sold
- $35.99 to $82.99Free shipping
- $15.95or Best OfferFree shipping
- Brand New · SimpliSafe$56.00Free shippingOnly 2 left
- Brand New · Unbranded$8.69Was: $9.99was - US $9.99Free shipping109 sold
- $35.74Trending at $38.08Free shipping13 sold
- Brand New · Honeywell$309.00Free shipping
- $65.00Free shipping
- Brand New · SimpliSafe$39.00Free shipping3 watching
- $38.69 to $143.99Was: $42.99was - US $42.99$5.00 shipping11 sold
- Brand New · Unbranded$17.50 to $145.05Was: $21.88was - US $21.88Free shipping60 sold
- $22.00or Best Offer$61.82 shipping100 sold
- Brand New · Unbranded$43.79or Best OfferFree shipping
- $34.98Free shipping173 sold
- $52.00Free shipping84 sold
- $34.99$3.99 shipping81 sold
- $19.99Free shipping
- $29.99or Best OfferFree shipping900 sold
- Brand New · Unbranded$14.99Free shipping
- $59.99 to $149.99Free shipping50 sold
- $53.99Was: $59.99was - US $59.99$5.00 shipping11 sold
- Brand New · Unbranded$15.89Free shipping1,744 sold
- Brand New · Unbranded$14.64Free shipping
- $34.99or Best OfferFree shipping257 sold
- $29.99or Best Offer$6.00 shipping2,163 sold
- New (Other) · Z-Wave$29.99$18.95 shipping94 sold
- New (Other) · Ring$42.99or Best OfferFree shipping431 sold
- Brand New · Acuity$176.00Free shipping
- $185.00Free shipping
- New (Other) · Unbranded$18.89Was: $41.97was - US $41.97$7.35 shippingOnly 2 left
- $39.95Free shipping164 sold
- Brand New · SimpliSafe$37.00Free shipping4 watching
- $55.85Free shipping
- $50.00$4.52 shipping
- Brand New · Ecolink$15.18Free shipping
- Brand New · Honeywell$17.75Trending at $28.43$5.31 shipping
- $21.39Was: $23.77was - US $23.77Free shipping74 sold
- Brand New · Unbranded$8.99or Best OfferFree shipping30 watching
- $52.00$7.16 shipping
- Brand New · Dakota Alert$249.99Free shipping2 watching
- Brand New · XFINITY$44.99or Best OfferFree shipping879 sold
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Top Rated
- 90% agree - Would recommend$26.99 New$16.99 Used
- 100% agree - Would recommend$19.50 New
Review Highlights
Recommended by our customersFunctional and attractive.
By monumentalartantiques
New sensors that work great. Smaller size is less noticeable than my older sensors which is nice in a residential system... see all reviews
Verified PurchaseNeeded to replace a sensor and add a zon...
By thale182
Needed to replace a sensor and add a zone. This was a drop-in replacement making the install quick and easy. And it has... see all reviews
Verified PurchaseGood product
By iluvmygto
Very good sensor, simply connect the two wires. I anchored mine into the cement floor using a masonry bit and anchors ... see all reviews
Verified PurchaseHoneywell motion sensor
By donnie52052
Great condition, looked brand new, only missing the installation/programming instructions and original boxing, battery ... see all reviews
Verified PurchaseThe best system for DIY
By michael055
I’ve had my SimpliSafe system for about two years now, and recently decided to protect a third door, so I bought the sen... see all reviews
Verified PurchaseGreat product with reasonable price
By tly13579
Worked as advertised. Real simple to use. It has a removable base just in case the space is tight for the whole unit to... see all reviews
Verified Purchaseexact replacment works perfectly hard, really hard to program unless you are a securtiy system repair person with a Alpha keypad to use
By itsa61
works great however not easy to add to your system. see all reviews
Verified PurchaseEffective Motion Detection with Easy Setup
By mell_lk
The Ring 4SP1SZ-0EN0 Motion Detector Alarm is a great addition to any home security setup. It’s easy to install and inte... see all reviews
Verified Purchase
