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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. Face Scanner Electronic Clocking in Time Attendance Recorder Dynamic Facial People Wiegand Waterproof Multi-Face Recognition
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    Face Scanner Electronic Clocking in Time Attendanc... SKU : WCAM101119340472
    Special Price US$142.60 Regular Price US$158.45
  2. Waterproof Turnstile Shenzhen WiFi TCP IP Camera Face Terminal Access Control Facia Recognition Time Attendance System
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    Waterproof Turnstile Shenzhen WiFi TCP IP Camera F... SKU : WCAM101119340426
    Special Price US$142.60 Regular Price US$158.45
  3. Wireless PTZ High Speed Dome IP Camera WIFI 4X Zoom Waterproof 960P Home Security Video Surveillance
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    Wireless PTZ High Speed Dome IP Camera WIFI 4X Zoo... SKU : 32971462982
    Special Price US$143.59 Regular Price US$159.55
  4. Wired Door Phone Video Intercom Unlock Building System
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    Wired Door Phone Video Intercom Unlock Building Sy... SKU : WCAM101119340408
    Special Price US$388.91 Regular Price US$432.12
  5. IP66 Outdoor Use SIP Onvif Multi Apartment Audio Intercom System
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    IP66 Outdoor Use SIP Onvif Multi Apartment Audio I... SKU : WCAM101119340288
    Special Price US$388.91 Regular Price US$432.12
  6. Video Intercom System for Building
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    Video Intercom System for Building SKU : WCAM101119340287
    Special Price US$388.91 Regular Price US$432.12
  7. Keypad Access Control Doorbell Intercom Camera
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    Keypad Access Control Doorbell Intercom Camera SKU : WCAM101119340286
    Special Price US$79.84 Regular Price US$88.71
  8. Wired Door Phone Video Intercom Buildng Villa Home Security System
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    Wired Door Phone Video Intercom Buildng Villa Home... SKU : WCAM101119340285
    Special Price US$388.91 Regular Price US$432.12
  9. SIP /Onvif Access Control Gate Intercom System with Camera
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    SIP /Onvif Access Control Gate Intercom System wit... SKU : WCAM101119340284
    Special Price US$388.91 Regular Price US$432.12
  10. Multi Apartment Video Door Phone Intercom System
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    Multi Apartment Video Door Phone Intercom System SKU : WCAM101119340283
    Special Price US$388.91 Regular Price US$432.12
  11. 4G IP67 Rechargeable Battery Wireless Handheld GPS Night Version Thermal Imaging Camera
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    4G IP67 Rechargeable Battery Wireless Handheld GPS... SKU : WCAM101119340583
    Special Price US$229.77 Regular Price US$255.30
  12. Face Recognition Scan Gate Thermometer Attendance Terminal Temperature Measuring Instrument
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    Face Recognition Scan Gate Thermometer Attendance ... SKU : WCAM101119340140
    Special Price US$272.24 Regular Price US$302.49
  13. Temperature Facial Attendance Machine Terminal for Company Management Employee with IC Card TCP/IP Stand Thermometer System
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    Temperature Facial Attendance Machine Terminal for... SKU : WCAM101119340139
    Special Price US$272.24 Regular Price US$302.49
  14. Good Quality ZK Access Control Card Reader Wiegand34 MF Card IC Card Reader IP64 Waterproof Smart Ca
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    Good Quality ZK Access Control Card Reader Wiegand... SKU : 32661396700
    Special Price US$21.61 Regular Price US$24.01
  15. 8618AK Stainless Waterproof Access Control RFID 125KHz with Keypad Silver 500 User
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    8618AK Stainless Waterproof Access Control RFID 12... SKU : KL8618AK
    Special Price US$20.32 Regular Price US$22.58
  16. V9 IC Fingerprint Touch Screen Password Entrance Anti-theft Door Electronic Smart Lock Red bronze/K
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    V9 IC Fingerprint Touch Screen Password Entrance A... SKU : 32857758037
    Special Price US$555.59 Regular Price US$617.32
  17. Door Management Intercom Face Identification Waterproof Facial Recognition Time Attendance with Access Control Function
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    Door Management Intercom Face Identification Water... SKU : WCAM101119340497
    Special Price US$232.25 Regular Price US$258.05
  18. Facial Communication with TCP IP Time Attendance WiFi Recognition Card Reader Access Control Keypad Face Capacity Waterproof
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    Facial Communication with TCP IP Time Attendance W... SKU : WCAM101119340496
    Special Price US$142.60 Regular Price US$158.45
  19. School Waterproof Biometric Time Attendance Facial Recognition Access Control Device
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    School Waterproof Biometric Time Attendance Facial... SKU : WCAM101119340169
    Special Price US$272.24 Regular Price US$302.49
  20. ABS Plastic TM Smart Card Bracelets,Waterproof TM1990A-F5 Wristband Strapps for Sauna/Resort/Bath ce
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    ABS Plastic TM Smart Card Bracelets,Waterproof TM1... SKU : 32600916539
    Special Price US$129.64 Regular Price US$144.04
  21. Original Xiaomi Mi Cube Controller Zigbee Version Controlled by Six Actions with Phone App for Smart
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    Original Xiaomi Mi Cube Controller Zigbee Version ... SKU : 32810263920
    Special Price US$18.50 Regular Price US$20.56
  22. Techage 8CH 1080P POE CCTV System 10.1" LCD NVR Kit 2MP Indoor Outdoor Dome Vandalproof IP Camera P2
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    Techage 8CH 1080P POE CCTV System 10.1" LCD N... SKU : 32806085436
    Special Price US$403.23 Regular Price US$448.04
    Out of stock
  23. NEW Safurance Wireless Water Leak Alarm Flood Level Overflow Detector Sensor Fish Tank Kitchen Home
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    NEW Safurance Wireless Water Leak Alarm Flood Leve... SKU : 32833054940
    Special Price US$11.79 Regular Price US$13.10
  24. Home Security PIR MP Alert Infrared Sensor Anti-theft Motion Detector Alarm Monitor Wireless Alarm s
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    Home Security PIR MP Alert Infrared Sensor Anti-th... SKU : 32507506089
    Special Price US$2.93 Regular Price US$3.26
  25. AG03 Magnetic Detacher for Retail Anti-Theft System
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    AG03 Magnetic Detacher for Retail Anti-Theft Syste... SKU : EASUNLOCKER
    Special Price US$10.81 Regular Price US$12.01
  26. 60W Solar Power Panel IP Camera Wifi 1080P HD 3G 4G SIM Card PTZ Solar Camera Outdoor 5X Optical Dom
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    60W Solar Power Panel IP Camera Wifi 1080P HD 3G 4... SKU : 32841687611
    Special Price US$77.66 Regular Price US$86.29
    Out of stock
  27. High Accuracy 140dB WDR Water-Proof Nigth Version Vehicle Plates Recogntion Camera
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    High Accuracy 140dB WDR Water-Proof Nigth Version ... SKU : WCAM101119340590
    Special Price US$337.06 Regular Price US$374.51
  28. Techage 8CH 1080P POE NVR Audio Record CCTV Security System 2MP Indoor Outdoor Dome PoE IP Camera IR
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    Techage 8CH 1080P POE NVR Audio Record CCTV Securi... SKU : 32811522267
    Special Price US$464.48 Regular Price US$516.09
  29. 720p HD Smart WiFi Wireless Home Visual Waterproof Ring Door Bell Phone Camera Video Doorbell Intercom or Apartment
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    720p HD Smart WiFi Wireless Home Visual Waterproof... SKU : WCAM101119340369
    Special Price US$24.39 Regular Price US$27.10
  30. Anpviz 1080P Dome PTZ IP Camera Outdoor Waterproof 2MP 2.8-12mm Motorized 4X Zoom Speed Dome Video S
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    Anpviz 1080P Dome PTZ IP Camera Outdoor Waterproof... SKU : 32894460048
    Special Price US$161.95 Regular Price US$179.95
  31. Automatic reading waterproof ID Card active guard tour guard patrol system Free 10 Guard Tour Checkp
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    Automatic reading waterproof ID Card active guard ... SKU : 32346600975
    Special Price US$27.85 Regular Price US$30.95
  32. IP43 waterproof RFID keypad standalone access control board 125KHz smart lock card reader for door a
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    IP43 waterproof RFID keypad standalone access cont... SKU : 32817514160
    Special Price US$18.29 Regular Price US$20.32
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