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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. UTEK UT-2201 RS485 to RS232 to RS485 Passive Interface Converter Adapter Data Communication
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    UTEK UT-2201 RS485 to RS232 to RS485 Passive Inter... SKU : UT-2201
    Special Price US$2.46 Regular Price US$2.74
  2. 16 to 24 Floors Elevator Access Control Biometric Facial Recognition Machine
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    16 to 24 Floors Elevator Access Control Biometric ... SKU : WCAM101119340556
    Special Price US$172.85 Regular Price US$192.05
  3. 10.4 Inch Capacitive Touch Screen All in One PC Windows 10 Industrial Panel Mini PC
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    10.4 Inch Capacitive Touch Screen All in One PC Wi... SKU : SENKE101118570028
    Special Price US$127.91 Regular Price US$142.12
  4. 865-928Mhz R2000 long range uhf rfid module one antenna port with RS232 interface free SDK for atten
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    865-928Mhz R2000 long range uhf rfid module one an... SKU : CFRA9003
    Special Price US$204.82 Regular Price US$227.58
  5. RAYKUBE Wireless Remote Control Kit 1V1 For Remote Open Electric Door Lock Control Module Rosewood T
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    RAYKUBE Wireless Remote Control Kit 1V1 For Remote... SKU : 32768266254
    Special Price US$1.14 Regular Price US$1.26
  6. LPSECURITY Biometrics Fingerprint Access Control RFID Reader for door gate access control system WG2
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    LPSECURITY Biometrics Fingerprint Access Control R... SKU : 32863538147
    Special Price US$34.55 Regular Price US$38.39
  7. Security System Access Control Face Recognition Terminal
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    Security System Access Control Face Recognition Te... SKU : WCAM101119340510
    Special Price US$142.60 Regular Price US$158.45
  8. Intelligent Face Recognition Access Control for Attendance
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    Intelligent Face Recognition Access Control for At... SKU : WCAM101119340509
    Special Price US$142.60 Regular Price US$158.45
  9. Biometric Attendance System Facial Recognition Terminal
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    Biometric Attendance System Facial Recognition Ter... SKU : WCAM101119340508
    Special Price US$142.60 Regular Price US$158.45
  10. Based on Linux Face Recognition System Access Control Terminal
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    Based on Linux Face Recognition System Access Cont... SKU : WCAM101119340507
    Special Price US$142.60 Regular Price US$158.45
  11. CCTV System Face Recognition Machine Terminal for Turnstile
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    CCTV System Face Recognition Machine Terminal for ... SKU : WCAM101119340506
    Special Price US$142.60 Regular Price US$158.45
  12. Turnstile Terminal Access Control Face Recognition System Device
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    Turnstile Terminal Access Control Face Recognition... SKU : WCAM101119340505
    Special Price US$142.60 Regular Price US$158.45
  13. Linux System Access Control Facial Recognition System Terminal for Turstile Gate
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    Linux System Access Control Facial Recognition Sys... SKU : WCAM101119340504
    Special Price US$142.60 Regular Price US$158.45
  14. ODM Custom Smart Security Facial Device Biometric Face Recognition Terminal for Wing Gate in Cbd Attendance Machine SIM Card
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    ODM Custom Smart Security Facial Device Biometric ... SKU : WCAM101119340501
    Special Price US$142.60 Regular Price US$158.45
  15. Face Recognition Terminal for Turnstile Access Control Systems
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    Face Recognition Terminal for Turnstile Access Con... SKU : WCAM101119340500
    Special Price US$142.60 Regular Price US$158.45
  16. Shenzhen Manufacturer 7inch Screen Face Recognition Attendance Machine
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    Shenzhen Manufacturer 7inch Screen Face Recognitio... SKU : WCAM101119340499
    Special Price US$145.01 Regular Price US$161.12
  17. Human Body Detection Security Time Attendance System Face Recognizer Access Control Terminal
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    Human Body Detection Security Time Attendance Syst... SKU : WCAM101119340498
    Special Price US$152.41 Regular Price US$169.34
  18. Intelligent Door Access System Smart Security Devices Facial Time Recognition Face Rcognition Attendance Terminal
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    Intelligent Door Access System Smart Security Devi... SKU : WCAM101119340495
    Special Price US$142.60 Regular Price US$158.45
  19. Scan Management Employees Facial Card Recording Recorder Dynamic Face Recognition Time Biometric Clocking in Machine
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    Scan Management Employees Facial Card Recording Re... SKU : WCAM101119340494
    Special Price US$142.60 Regular Price US$158.45
  20. Capacity Biometric Facial Bio Smart Card Reader Automatic School Bell Face Recognition Authentication Adms Time Attendance
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    Capacity Biometric Facial Bio Smart Card Reader Au... SKU : WCAM101119340492
    Special Price US$142.60 Regular Price US$158.45
  21. HTTP/Mqtt Two Cameras Live Facial Recognition Biometric Attendance Face Scan Reader
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    HTTP/Mqtt Two Cameras Live Facial Recognition Biom... SKU : WCAM101119340637
    Special Price US$142.60 Regular Price US$158.45
  22. TCP/IP SSR Self-Service Fingerprint Terminal with USB
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    TCP/IP SSR Self-Service Fingerprint Terminal with ... SKU : NORDS10092165
    Special Price US$43.40 Regular Price US$48.22
  23. Self-Service Reprot Built-in Battery RFID Card Fingerprint Access Control System
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    Self-Service Reprot Built-in Battery RFID Card Fin... SKU : NORDS10092159
    Special Price US$69.67 Regular Price US$77.41
  24. Cooking Work Safety Painting Face Protection Multi-Function Oil-Splash Proof Mask Dust Face Protective Gift Mask For Kitchen
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    Cooking Work Safety Painting Face Protection Multi... SKU : mask01
    Special Price US$2.61 Regular Price US$2.90
  25. LPSECURITY Biometric Fingerprint RFID Reader Access Controller with 20pcs keychain tags WG26 500 use
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    LPSECURITY Biometric Fingerprint RFID Reader Acces... SKU : 32759825165
    Special Price US$34.55 Regular Price US$38.39
  26. 220V Input 12V5A entrance guard power supply electric lock power entrance guard system power supply power controller
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    220V Input 12V5A entrance guard power supply elect... SKU : AP220V12V5A
    Special Price US$16.41 Regular Price US$18.24
  27. Zkteco Smart Phone Standard Single Latch European Standard European Door Lock
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    Zkteco Smart Phone Standard Single Latch European ... SKU : 101015000042
    Special Price US$30.48 Regular Price US$33.87
  28. Zkteco Smart Phone Standard Single Latch European Standard European Standard Lock
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    Zkteco Smart Phone Standard Single Latch European ... SKU : 101015000041
    Special Price US$20.18 Regular Price US$22.42
  29. Zkteco Smart Phone Standard Single Latch European Standard Deadbolt Door Lock
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    Zkteco Smart Phone Standard Single Latch European ... SKU : 101015000040
    Special Price US$20.18 Regular Price US$22.42
  30. Nordson Zkteco Smart Phone Standard Single Latch European Standard Deadbolt Lock
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    Nordson Zkteco Smart Phone Standard Single Latch E... SKU : 101015000039
    Special Price US$20.18 Regular Price US$22.42
  31. Nordson Zkteco Smart Phone Standard Single Latch European Standard Smart Phone Lock
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    Nordson Zkteco Smart Phone Standard Single Latch E... SKU : 101015000038
    Special Price US$20.18 Regular Price US$22.42
  32. Zkteco Smart Phone Standard Single Latch European Standard RFID Card Lock
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    Zkteco Smart Phone Standard Single Latch European ... SKU : 101015000037
    Special Price US$20.18 Regular Price US$22.42
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