Household Sensors & Alarms
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Good DealAmazon Smart Air Quality Monitor – Know your air, Works with Alexa$49.99Save $16.56Online - Amazon.comTypically:$66.55Save $16.56MSRP:$69.99Save $20.00 - Good Deal
Good DealKidde Smoke Detector, Lithium Battery Powered with Photoelectric Sensor, Smoke Alarm, 2-Pack$33.00Save $11.69Online - WalmartTypically:$44.69Save $11.69MSRP:$31.97 - Good Deal
Good DealFirst Alert SMCO210V, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Voice & Location Alerts, 1-Pack$20.40Save $32.20Used - Amazon.comTypically:$52.60Save $32.20MSRP:$37.99Save $17.59 - Best Seller
Best SellerFirst Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMCO100, 1-Pack,White$37.85Save $7.14Online - Amazon.comTypically:$44.99Save $7.14MSRP:$44.99Save $7.14 
First Alert Interconnect Hardwire Smoke Alarm with Battery Backup & Voice Alerts, 3-Pack$84.59Save $13.87Online - Amazon.comTypically:$98.46Save $13.87MSRP:$89.83Save $5.24
Mighty Mule Linear 12-Volt Photo Eye Sensors-Pair (R4222), Black$35.23Save $44.96Used - Amazon.comTypically:$80.19Save $44.96MSRP:$124.02Save $88.79
Safety Technology International, Inc. STI-13020FR Universal Stopper® with Horn, Flush Mount and Fire Label, Indoor/Outdoor Polycarbonate Protective Cover for Pull Stations or Call Points$30.78Save $53.12Used - Amazon.comTypically:$83.90Save $53.12MSRP:$109.00Save $78.22
SABRE Wedge Door Stop Security Alarm with 120 Decibel Siren, White$10.79Save $2.00Online - WalmartTypically:$12.79Save $2.00MSRP:$17.99Save $7.20- Kidde 10-Year Battery Smoke Detector with LED Warning Lights, 2 pack$39.98Save $5.04Online - Sam's ClubTypically:$45.02Save $5.04MSRP:$39.98
First Alert Interconnect Hardwire Smoke Alarm with Battery Backup & Voice Alerts, 6-Pack$95.99Save $73.46Used - Amazon.comTypically:$169.45Save $73.46MSRP:$219.88Save $123.89- Best Seller
Best SellerKidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 20SA10$37.79Save $4.55Online - Amazon.comTypically:$42.34Save $4.55 
First Alert SM100V-AC, Interconnect Hardwire Smoke Alarm with Battery Backup & Voice Alerts, 1-Pack$33.99Save $3.18Online - Amazon.comTypically:$37.17Save $3.18MSRP:$49.00Save $15.01
Kidde Hardwired Photoelectric Smoke Detector Alarm, 10-Year Lithium Sealed Battery Backup$37.79Save $5.49Online - WalmartTypically:$43.28Save $5.49MSRP:$39.84Save $2.05- Best Seller
Best SellerFirst Alert SM210, 10-Year Sealed Battery Smoke Alarm with Slim Profile Design, 1-Pack$22.78Save $2.23Online - Amazon.comTypically:$25.01Save $2.23MSRP:$28.45Save $5.67 
Standard Air Temp Sensor, STAAx73 Fits select: 1999-2004 FORD F250, 1999-2004 FORD F350$44.99Save $5.57Online - WalmartTypically:$50.56Save $5.57MSRP:$60.23Save $15.24
Kidde Combination Photoelectric Smoke & Carbon Monoxide Alarm with Hardwire Interconnect | 900-CUAR$60.99Save $6.91Online - WalmartTypically:$67.90Save $6.91MSRP:$64.45Save $3.46
Lithonia Lighting PP20 Power Pack for Low Voltage Sensor System, Dual Voltage Transformer, Self-Contained Relay, Powers Up to 14 Sensors$15.41Save $12.46Used - Amazon.comTypically:$27.87Save $12.46MSRP:$140.00Save $124.59- Best Seller
Best SellerKidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 30CUD10$41.79Save $2.09Online - Amazon.comTypically:$43.88Save $2.09 - First Alert BRK Interconnect Hardwire Smoke Alarm with Battery Backup & Voice Alerts, 1-Pack$34.99Save $1.32Online - Amazon.comTypically:$36.31Save $1.32MSRP:$57.95Save $22.96
- Best Seller
Best SellerFirst Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack$37.89Save $1.66Online - Amazon.comTypically:$39.55Save $1.66MSRP:$39.49Save $1.60 
First Alert SM500V, Interconnect Battery-Operated Smoke Alarm with Voice Alerts, 1-Pack$41.99Save $1.36Online - Amazon.comTypically:$43.35Save $1.36MSRP:$49.99Save $8.00- Best Seller
Best SellerFirst Alert SC5 Hardwire Smart Smoke & Carbon Monoxide Alarm, SMCO600NV-AC, 1-Pack$114.96Save $2.40Online - Amazon.comTypically:$117.36Save $2.40 
First Alert SMCO210 Sealed 10-Year-Battery 2-in-1 Smoke and CO Alarm with Slim Profile, 1046796$39.40Save $0.53Online - WalmartTypically:$39.93Save $0.53MSRP:$54.99Save $15.59
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-Inch, 2 Pack$53.97Save $3.51Online - WalmartTypically:$57.48Save $3.51MSRP:$55.37Save $1.40
Universal Security Instruments, Sensing Plus, Hardwired Smoke & Fire Alarm, Multi-Criteria Detection, with 10 Year Battery Backup$32.96Save $1.97Online - WalmartTypically:$34.93Save $1.97MSRP:$52.64Save $19.68
First Alert SMICO105-AC, Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with 10-Year Battery Backup, 3-Pack$158.00Save $2.21Online - Amazon.comTypically:$160.21Save $2.21MSRP:$219.99Save $61.99
First Alert Hardwired Heat Alarm with Battery Backup, BRK Brands HD6135FB$29.99Save $0.07Online - Amazon.comTypically:$30.06Save $0.07MSRP:$43.98Save $13.99
BRK Hard-Wired w/Battery Back-up Ionization Smoke Detector$18.91Online - WalmartTypically:$18.91MSRP:$20.26Save $1.35
SK-200 SkylinkNet Connected Home Alarm Security & Home Automation System, iOS iPhone Android Smartphone App Compatible with No Monthly Fees$99.99Save $4.63Online - WalmartTypically:$104.62Save $4.63MSRP:$159.99Save $60.00
First Alert Interconnect Hardwire Dual Sensor Smoke Alarm with Battery Backup, SM300-AC, 3-Pack$105.47Save $0.31Online - Amazon.comTypically:$105.78Save $0.31
First Alert Smoke Alarm, 10-Year Sealed Battery Dual Sensor Detector with Test & Silence Button, SM310, 1-Pack$61.26Save $0.09Online - Amazon.comTypically:$61.35Save $0.09MSRP:$64.99Save $3.73- Best Seller
Best SellerFirst Alert Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack$16.99Online - Amazon.comTypically:$16.98MSRP:$16.98 
Safety Technology International, Inc. STI-1130 Stopper II with Horn, Clear Spacer and Protective Polycarbonate Cover$86.61Save $3.28Online - Amazon.comTypically:$89.89Save $3.28
First Alert SC5 Battery Smart Smoke & Carbon Monoxide Alarm, SMCO600NV, 1-Pack$118.90Online - Amazon.comTypically:$117.25
First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup, 6-Pack$271.15Online - Amazon.comTypically:$268.86MSRP:$270.52
Sensor Switch CMR 10 Contractor Select Extended Range Passive Infrared Ceiling Mount Occupancy Sensor, White$63.14Online - Amazon.comTypically:$62.53MSRP:$126.89Save $63.75
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, White$62.79Save $1.48Online - Amazon.comTypically:$64.27Save $1.48
X-Sense Plug-in Carbon Monoxide Detector, with AAA Battery Backup, XC0C-SA, 1-Pack$17.99Save $0.37Online - Amazon.comTypically:$18.36Save $0.37MSRP:$24.99Save $7.00
First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup - 3 Pack$153.41Online - Amazon.comTypically:$150.45MSRP:$174.99Save $21.58
First Alert SMICO110, 10-Year Battery Combination Smoke & Carbon Monoxide Alarm, 1-Pack$44.99Online - Amazon.comTypically:$44.10MSRP:$49.99Save $5.00
First Alert Interconnect Hardwire Dual Sensor Smoke Alarm with Battery Backup, SM300-AC, 6-Pack$214.10Online - Amazon.comTypically:$206.05
Safe T Alert - Dual LP/CO Alarm - Flush Mount w/Trim Ring White - 25-742-WT-TR$83.29Save $0.89Online - Amazon.comTypically:$84.18Save $0.89MSRP:$108.45Save $25.16
Kidde Hard-Wired w/Battery Back-up Electrochemical Carbon Monoxide Detector$43.06Online - WalmartTypically:$41.80MSRP:$64.34Save $21.28
First Alert 1046834, Electric Precision Detection Smoke Alarms$24.84Save $0.15Online - WalmartTypically:$24.99Save $0.15MSRP:$30.49Save $5.65
Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display - 2 Pack$79.24Online - Amazon.comTypically:$76.48MSRP:$74.84
First Alert BRK PRC700 Battery-Operated Smoke and Carbon Monoxide Alarm$26.07Save $0.10Online - Amazon.comTypically:$26.17Save $0.10
GE UltraPro Audible Alarm Surge Protector Wall Adapter, 15A, 38124$12.38Online - WalmartTypically:$12.38MSRP:$12.39Save $0.01
Skylink WA-MT Wireless Water Leak Flood Sensor for SkylinkNet Security & M-Series Systems$23.75Online - WalmartTypically:$23.75MSRP:$19.99
Skylink Wireless Deluxe Long Range Indoor Outdoor Motion Sensor and Window Door Sensor Alarm System$59.25Online - WalmartTypically:$59.25
Kidde 10 Year Smoke Alarm and Carbon Monoxide Value Pack, Models i1040 and KN-COB-LP2$38.47Online - WalmartTypically:$38.47
Kidde Nighthawk Plug-In AC/DC Carbon Monoxide Alarm Detector with Digital Display KN-COPP-3$42.94Online - WalmartTypically:$42.94MSRP:$43.47Save $0.53
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included, 2 Pack$57.00Online - WalmartTypically:$57.00MSRP:$56.00
Kidde Battery Operated Smoke & Carbon Monoxide Detector with LED Lights & Voice Alerts$43.00Online - WalmartTypically:$43.00
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-inch, Batteries Included, 2 Pack$36.17Online - WalmartTypically:$36.17
Kidde C3010D Carbon Monoxide Detector with Digital Display and 10-Year Worry-Free Lithium Battery, KIDDE$49.94Online - WalmartTypically:$49.94MSRP:$49.97Save $0.03
Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch$65.00Online - WalmartTypically:$64.99
