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Search results for: 'Explain the difference between "hard" and "soft" water and how it is measured.'

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android kotlin OnBackInvokedCallback is not enabled for the application
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  1. Blue Iris Compatible VoIP SIP IP Video Doorphone Intercom Intercom for Two Way Talk and Remote Door Open
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    Blue Iris Compatible VoIP SIP IP Video Doorphone I... SKU : WCAM101119340595
    Special Price US$116.67 Regular Price US$129.64
  2. 4 HD DVR Surveillance DVR 4-channel D1 mobile remote cloud
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    4 HD DVR Surveillance DVR 4-channel D1 mobile remo... SKU : MHK4CH264
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  3. Night Vision Two Way Talk and Real-Time Video Wireless Doorbell Camera WiFi Video Doorbell
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    Night Vision Two Way Talk and Real-Time Video Wire... SKU : WCAM101119340389
    Special Price US$46.31 Regular Price US$51.45
  4. Professional Design Fail-Secure DC12V Cabinet Door Lock for File and Document Cabinets
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    Professional Design Fail-Secure DC12V Cabinet Door... SKU : NORDS10092164
    Special Price US$9.07 Regular Price US$10.08
  5. Professional Design Fail-Secure DC12V Electronic Cabinet Lock for File and Document Cabinets
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    Professional Design Fail-Secure DC12V Electronic C... SKU : NORDS10092158
    Special Price US$20.32 Regular Price US$22.58
  6. Audio interface RFID HF 14443A NFC mini reader writer 0 5M for Android mobile phone +SDK
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    Audio interface RFID HF 14443A NFC mini reader wri... SKU : RH06
    Special Price US$43.55 Regular Price US$48.38
  7. 2Pcs/Lot PIR motion Det Light sensor 86 box stair light led infrared human body induction lamp
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    2Pcs/Lot PIR motion Det Light sensor 86 box stair ... SKU : 32792848582
    Special Price US$8.71 Regular Price US$9.68
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  8. 2017 Xiaomi Smart Home Gateway 3 ,Aqara Smart Light Control ZiGBee/Wifi Wireless Key and Wall Switc
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    2017 Xiaomi Smart Home Gateway 3 ,Aqara Smart Ligh... SKU : 32792095225
    Special Price US$27.42 Regular Price US$30.47
  9. 2MP Full HD Wireless Security IP67 Heavy-Duty Metal Weatherproof IP Human Detection PTZ Camera
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    2MP Full HD Wireless Security IP67 Heavy-Duty Meta... SKU : WCAM101119340610
    Special Price US$1,728.49 Regular Price US$1,920.55
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    4.3 Inch Touch Screen Wireless NFC Card Blue Tooth... SKU : WCAM101119340636
    Special Price US$73.46 Regular Price US$81.62
  11. Ios&Android Mobile Apps Home CCTV Systems Intercom Doorbell Camera
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    Ios&Android Mobile Apps Home CCTV Systems Inte... SKU : WCAM101119340376
    Special Price US$86.43 Regular Price US$96.03
  12. Temperature Facial Access Control System Turnstile Web Based Cloud Open API Document Company Management Machine
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    Temperature Facial Access Control System Turnstile... SKU : WCAM101119340444
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  13. Access Control System Turnstile Open API Document Company Management Machine
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    Access Control System Turnstile Open API Document ... SKU : WCAM101119340144
    Special Price US$46.16 Regular Price US$51.29
  14. Xiaomi Aqara Smart Door Touch Lock ZigBee Connection For Home Security Fingerprint Unlock APP Anti-P
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    Xiaomi Aqara Smart Door Touch Lock ZigBee Connecti... SKU : 32867533788
    Special Price US$237.66 Regular Price US$264.07
  15. 2pcs/Lot Indoor PIR Motion Sensor Led Stair Light Infrared Human Body Induction Lamp Recessed Steps
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    2pcs/Lot Indoor PIR Motion Sensor Led Stair Light ... SKU : 32793200331
    Special Price US$8.71 Regular Price US$9.68
    Out of stock
  16. DIYSECUR Full TCP / IP Fingerprint ID Card Reader Door Access Control Kit + Magnetic Lock + Exit
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    DIYSECUR Full TCP / IP Fingerprint ID Card Reader ... SKU : 1290724467
    Special Price US$149.50 Regular Price US$166.11
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  17. Wide-Angle and Large-Aperture Lens Meeting Webcam Security 1080P Web Camera Auto Focus Wide Live for Laptop Computer
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    Wide-Angle and Large-Aperture Lens Meeting Webcam ... SKU : WCAM101119340518
    Special Price US$79.84 Regular Price US$88.71
  18. Free Sdk C# Built-in Card Reader RFID Facial Recognition Time Attendance Terminal Face Recognition Devices Turnstile Terminal
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    Free Sdk C# Built-in Card Reader RFID Facial Recog... SKU : WCAM101119340164
    Special Price US$142.60 Regular Price US$158.45
  19. Access Control Attendance Body Wrist Temperature Detection Measuring Living Face Recognition Terminal
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    Access Control Attendance Body Wrist Temperature D... SKU : WCAM101119340572
    Special Price US$224.70 Regular Price US$249.67
  20. Rarelock Christmas Supplies 2pcs Latch Thumb Lock For Door Window Cabinet Box Cupboard Locker Home
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    Rarelock Christmas Supplies 2pcs Latch Thumb Lock ... SKU : 32630024844
    Special Price US$0.15 Regular Price US$0.16
  21. IP68 Magnetic Adsorption USB 125kHz RFID Card Guard Patrol System
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    IP68 Magnetic Adsorption USB 125kHz RFID Card Guar... SKU : 101015000007
    Special Price US$30.19 Regular Price US$33.55
  22. Best Price IP68 RFID Monitoring Guard Tour Patrol Management System RFID Card Reader
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    Best Price IP68 RFID Monitoring Guard Tour Patrol ... SKU : 101015000004
    Special Price US$51.67 Regular Price US$57.41
  23. IP68 Magnetic Adsorption USB 125kHz RFID Card Guard Tour Machine Real Time Guard Tour RFID Reader Price
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    IP68 Magnetic Adsorption USB 125kHz RFID Card Guar... SKU : 101015000001
    Special Price US$46.67 Regular Price US$51.85
  24. IP68 Magnetic Adsorption USB 125kHz Guard Tour Patrol Management System RFID Card Reader
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    IP68 Magnetic Adsorption USB 125kHz Guard Tour Pat... SKU : NORDS10092235
    Special Price US$30.19 Regular Price US$33.55
  25. 4.3 Inch Touch Screen Wireless Time Attendance Face Detection Kiosk Built in Card Reader
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    4.3 Inch Touch Screen Wireless Time Attendance Fac... SKU : WCAM101119340536
    Special Price US$73.46 Regular Price US$81.62
  26. Fingerprint RFID Access control system set Control Machine Digital Scanner Sensor For Door Lock Ti
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    Fingerprint RFID Access control system set Contro... SKU : 32828709267
    Special Price US$196.54 Regular Price US$218.38
  27. C++ HTTP Mqtt Scan Reader and Facial Face Recognition Body Temperature Check
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    C++ HTTP Mqtt Scan Reader and Facial Face Recognit... SKU : WCAM101119340233
    Special Price US$272.24 Regular Price US$302.49
  28. Smart Face Recognition Access Terminal Scanning Body Face Recognition and Temperature Measuring Machine
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    Smart Face Recognition Access Terminal Scanning Bo... SKU : WCAM101119340223
    Special Price US$272.24 Regular Price US$302.49
  29. 0.2 Accuracy Face Recognition and Body Temperature Measurement Detection Alarm System Door Access Reading Biometric Machine
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    0.2 Accuracy Face Recognition and Body Temperature... SKU : WCAM101119340024
    Special Price US$272.24 Regular Price US$302.49
  30. 150~200 Meters Hunting Prime Lens WiFi Zoom IP Camera
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    150~200 Meters Hunting Prime Lens WiFi Zoom IP Cam... SKU : WCAM101119340407
    Special Price US$87.29 Regular Price US$96.99
  31. 4 in 1 Wide Angle Fisheye Telescope Zoom Moboile Camera Lens for Mobile Phone
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    4 in 1 Wide Angle Fisheye Telescope Zoom Moboile C... SKU : WCAM101119340406
    Special Price US$87.29 Regular Price US$96.99
  32. Lens 65mm Support Digital Zoom out Watching Digital Camera Telescope
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    Lens 65mm Support Digital Zoom out Watching Digita... SKU : WCAM101119340404
    Special Price US$87.29 Regular Price US$96.99
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