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

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  1. RFID Guard Tour Patrol System Torch IP67 Waterproof USB Rugged Free Software
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    RFID Guard Tour Patrol System Torch IP67 Waterproo... SKU : AP100LBR
    Special Price US$69.14 Regular Price US$76.82
  2. Faicla 7′′ Waterproof Facial Access Control System Complete with Face Recognition Free Cute Staff Time and Attendance Software
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    Faicla 7′′ Waterproof Facial Access Control Sy... SKU : WCAM101119340476
    Special Price US$142.60 Regular Price US$158.45
  3. NEW ABS Wireless Water Leak Detector Water Sensor Alarm Leak Alarm Home Security
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    NEW ABS Wireless Water Leak Detector Water Sensor ... SKU : 32792510750
    Special Price US$4.31 Regular Price US$4.79
  4. Five Free PRO Softwares CCTV Doorbell Camera Waterproof CCTV 2MP Security Intercom
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    Five Free PRO Softwares CCTV Doorbell Camera Water... SKU : WCAM101119340339
    Special Price US$86.43 Regular Price US$96.03
  5. 5000pcs/lot EAS Gate Sensor Retail Security 58khz AM Supermarket Anti-theft DR Label AM 58khz Soft Label Sticker
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    5000pcs/lot EAS Gate Sensor Retail Security 58khz ... SKU : RFID-tags-eas-HD809
    Special Price US$81.65 Regular Price US$90.72
  6. Stainless steel door latch locks Anti-Theft Lock bolt buckle Gate Cabinet Latches Hardware Furniture
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    Stainless steel door latch locks Anti-Theft Lock b... SKU : 32878008529
    Special Price US$1.09 Regular Price US$1.21
  7. School Bus 4G Face Access Camera Time Attendance Machine with Free Software and Sdk
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    School Bus 4G Face Access Camera Time Attendance M... SKU : WCAM101119340639
    Special Price US$142.60 Regular Price US$158.45
  8. China Factory Water-Proof Villa Intercom System Video and Audio Door Phone
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    China Factory Water-Proof Villa Intercom System Vi... SKU : WCAM101119340122
    Special Price US$81.87 Regular Price US$90.96
  9. Thermal and Visual Waterproof Camera Laser Dome PTZ Camera
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    Thermal and Visual Waterproof Camera Laser Dome PT... SKU : WCAM101119340627
    Special Price US$128.89 Regular Price US$143.22
  10. 2018 New IP55 Security Guard Tour Patrol System With LED Light Flashlight Strong Waterproof Long Use
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    2018 New IP55 Security Guard Tour Patrol System Wi... SKU : 32796113285
    Special Price US$24.53 Regular Price US$27.26
    Out of stock
  11. Smart Keyless Fingerprint Lock USB Rechargeable Waterproof Anti-Theft Security Padlock Door Luggage
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    Smart Keyless Fingerprint Lock USB Rechargeable Wa... SKU : 32972119791
    Special Price US$15.96 Regular Price US$17.74
    Out of stock
  12. 8 Inch Ai Face Recognition Thermal Scanner Camera with Thermal Temperature Sensor
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    8 Inch Ai Face Recognition Thermal Scanner Camera ... SKU : WCAM101119340210
    Special Price US$319.77 Regular Price US$355.30
  13. 8 Inch Ai Face Recognition Thermal Scan Camera with Thermal Temperature Sensor
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    8 Inch Ai Face Recognition Thermal Scan Camera wit... SKU : WCAM101119340183
    Special Price US$261.27 Regular Price US$290.30
  14. Face Recognition Thermal Camera Body Temperature Thermal Camera
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    Face Recognition Thermal Camera Body Temperature T... SKU : WCAM101119340145
    Special Price US$45.00 Regular Price US$50.00
  15. Free Software WiFi Full Viewing Video Online OEM Wiegand Waterproof Dual Multi Biometric Machine Door Lock Face Recognition
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    Free Software WiFi Full Viewing Video Online OEM W... SKU : WCAM101119340451
    Special Price US$142.60 Regular Price US$158.45
  16. EAS Blank Blank Anti theft label Sticker Soft Label RF 8.2Mhz 4x4mm
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    EAS Blank Blank Anti theft label Sticker Soft Labe... SKU : EAS_tag_LIHTNE
    Special Price US$8.49 Regular Price US$9.43
  17. L1 Smart Keyless Fingerprint Lock for Car Motorcycle Bike Waterproof Security Anti-theft Door Suitca
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    L1 Smart Keyless Fingerprint Lock for Car Motorcyc... SKU : 32956682761
    Special Price US$18.14 Regular Price US$20.16
    Out of stock
  18. 5pcs Original Xiaomi Aqara Water Immersing Sensor Flood Water Linkage Detector Zigbee System Remote
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    5pcs Original Xiaomi Aqara Water Immersing Sensor ... SKU : 32829054438
    Special Price US$95.07 Regular Price US$105.63
  19. Aqara Smart Door Windows Sensor Wireless Intelligent Mijia Home anti-theft protection Zigbee functio
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    Aqara Smart Door Windows Sensor Wireless Intellige... SKU : 32829007348
    Special Price US$12.96 Regular Price US$14.39
  20. Waterproof Biometric Face Recognition Software Optical Sensor Access Control Barrier Gate Big Capacity Time Recording Device
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    Waterproof Biometric Face Recognition Software Opt... SKU : WCAM101119340172
    Special Price US$272.24 Regular Price US$302.49
  21. Free Software WiFi Full Viewing Wiegand Waterproof Multi Recognition Face Detection Program Facial Reader Engine Control Module
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    Free Software WiFi Full Viewing Wiegand Waterproof... SKU : WCAM101119340167
    Special Price US$142.60 Regular Price US$158.45
  22. DC15V Shopping Mall 8.2MHZ EAS RF Soft Label Deactivator RF Digital Glass Pad Deactivator Anti-Theft Alarm Sensor 21.9*21.9cm
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    DC15V Shopping Mall 8.2MHZ EAS RF Soft Label Deact... SKU : eas_Deactivator_HR_904_RF
    Special Price US$21.77 Regular Price US$24.18
  23. Waterproof Mini portable Bluetooth smart Fingerprint Lock Anti Theft iOS Android APP control door
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    Waterproof Mini portable Bluetooth smart Fingerpri... SKU : 32962995679
    Special Price US$21.77 Regular Price US$24.19
    Out of stock
  24. Fingerprint Padlock Smart Fingerprint Lock IP66 Waterproof Dustproof Design Keyless Anti-theft
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    Fingerprint Padlock Smart Fingerprint Lock IP66 Wa... SKU : 32939904529
    Special Price US$17.27 Regular Price US$19.19
    Out of stock
  25. Water-Proof Cat5 One Cable Multi Apartment Color Video Doorbell
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    Water-Proof Cat5 One Cable Multi Apartment Color V... SKU : WCAM101119340410
    Special Price US$388.91 Regular Price US$432.12
  26. Waterproof Multi Apartment Building Intercom Video Door Phone
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    Waterproof Multi Apartment Building Intercom Video... SKU : WCAM101119340282
    Special Price US$388.91 Regular Price US$432.12
  27. Face Recognition Thermal Camera Body Temperature Thermal Camera
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    Face Recognition Thermal Camera Body Temperature T... SKU : WCAM101119340235
    Special Price US$272.24 Regular Price US$302.49
  28. ANSI/ISO Standard ATM Magnetic Card Access Control
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    ANSI/ISO Standard ATM Magnetic Card Access Control SKU : NORDS10092222
    Special Price US$43.21 Regular Price US$48.01
  29. Original Xiaomi Aqara Water Immersing Sensor Flood Water Linkage Detector Zigbee System Remote Alarm
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    Original Xiaomi Aqara Water Immersing Sensor Flood... SKU : 32827035225
    Special Price US$18.60 Regular Price US$20.67
  30. 4G WiFi GPS Handheld Night Vision Thermal Infrared Night Vision Binoculars Scope Thermal
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    4G WiFi GPS Handheld Night Vision Thermal Infrared... SKU : WCAM101119340593
    Special Price US$1,901.34 Regular Price US$2,112.60
  31. SANNCE 4CH Wireless NVR CCTV System 720P IP Camera WIFI Waterproof IR Night Vison Home Security Came
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    SANNCE 4CH Wireless NVR CCTV System 720P IP Camera... SKU : 32729321663
    Special Price US$108.28 Regular Price US$120.31
    Out of stock
  32. Waterproof Keyless Bluetooth Fingerprint Lock Padlock Anti-Theft APP Control Door Cabinet Smart
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    Waterproof Keyless Bluetooth Fingerprint Lock Padl... SKU : 32968330769
    Special Price US$21.34 Regular Price US$23.71
    Out of stock
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