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Go to School Store, a factory store, selling Security & Protection items. There are 1735 best seller items showing below, buy directly from them.

New Arrivals

2024 New Generation III Plug & Play APRS X1C-3 Handset Module Support TRACK\DIGI\USB'
US $ 80.05
US $ 84.27
-5%
(5.0)
TGB computer calibration instrument mobile phone meter maintenance time mechanical watch calibration detection clock repair tool
US $ 49.97
US $ 52.60
-5%
(5.0)
Micrometer Head / Micrometer 0-13mm 0-6.5mm 0-25mm Micrometer Head with Mounting Nut
US $ 16.99
US $ 17.88
-5%
(5.0)
RF Power Meter 1MHz--10GHz -50--0dBm Power Meter RF Power Attenuation Value Can Be Set
US $ 49.60
US $ 52.21
-5%
(5.0)
Xiegu G90S Special U5 LINK Radio Connector FT8 Pass-through HRD\N1MM\CW
US $ 81.57
US $ 85.86
-5%
(5.0)
Machine Vision Strip Light Source Laser Machine Screening Machine Ccd Industrial Camera Appearance Measurement Industrial Light
US $ 44.56
US $ 46.91
-5%
(5.0)
T80-60 Series:ROV,Underwater Thruster,Underwater Motor,Unmanned Vessel Thruster
US $ 444.83
US $ 468.24
-5%
(5.0)
Dual-frequency GPS Signal Transponder/GPS+BD Amplifier/gps Indoor Signal Amplification Coverage/gps Booster
US $ 69.17
US $ 72.81
-5%
(5.0)
J30J-9TJ/ZK Connector J30J-9TJL J30J-9ZKP J30J-9ZKW-J/ZKN-J Plug Holder
US $ 21.13
US $ 22.24
-5%
(5.0)
Antenna Coaxial Lightning Arrester Diamond CA-23RP/RS Instrument Repeater Base Station Outdoor Antenna
US $ 19.08
US $ 20.08
-5%
(5.0)
K9 Plano - convex Lens 25 25.4mm Uncoated Wavelength 350nm - 2mm Optical Focusing Beam Expanding Collimator
US $ 31.97
US $ 33.65
-5%
(5.0)
1pcs Center Wavelength 340-1064nm Filter Narrowband Filter Bandpass Filter Lens Special Filter (bandpass/narrowband)
US $ 24.14
US $ 25.41
-5%
(5.0)
EMMC Mirroring Tool Read/write BOOT Free Fly-by-wire Navigation SD_TF Hi-Speed USB3.0 Adaptor 809H Holder
US $ 38.85
US $ 40.89
-5%
(5.0)
Machine Vision Strip Backlight Automated Industrial Inspection Visual Light Source LED Strip Light Specifications Complete
US $ 43.17
US $ 45.44
-5%
(5.0)
Pvc-u Clamp Butterfly Valve PVC Handle Butterfly Valve UPVC Flange Butterfly Valve Clamp Plastic Disc Valve D71X-10U
US $ 33.38
US $ 35.14
-5%
(5.0)
40K Power Adjustable Ultrasonic Cleaning Transducer Vibrator Control Power Dishwasher Vibrator Generator Motherboard
US $ 53.16
US $ 55.95
-5%
(5.0)
WXC-220A Silver Knob Pressure Control Vibration Feed Regulation Governor Controller DYC-220AV
US $ 24.58
US $ 25.87
-5%
(5.0)
XY Translation Table LXXology LGX40/60/80/90-L-R-C Micrometer Manual Precision Fine-tuning Platform Slide
US $ 42.70
US $ 44.95
-5%
(5.0)
Level Sensor Transmitter Potentiometer to Current 0/4-20ma Resistance Scale to Current 4-20mA
US $ 13.35
US $ 14.06
-5%
(5.0)
TIG Welding Machine Modified Precision Pulse Controller Stainless Steel Cold Welding Machine Home Multi-function
US $ 121.03
US $ 127.40
-5%
(5.0)
MgO Magnesium Oxide Single Crystal Substrate-10x10x0.5mm-single Side Polished-crystal Orientation 100-110-111
US $ 17.67
US $ 18.59
-5%
(5.0)
5 Million Wide Dynamic Face Recognition Anti-backlight Industrial Camera Module USB Driver-free Infrared Light Fill Light
US $ 44.56
US $ 46.91
-5%
(5.0)
820/821 Portable Desktop Dissolved Oxygen Meter
US $ 428.76
US $ 451.33
-5%
(5.0)
New Version 0-5V to 4-20MA Voltage to Current Module Linear Conversion Transmitter Module
US $ 28.61
US $ 30.12
-5%
(5.0)
KNX USB interface H8C09 Lasagna KNX Downloader
US $ 62.00
US $ 65.26
-5%
(5.0)
Double-layer Semiconductor Refrigeration Cooling Sheet TEC2-19006 19004 19005 19008 40*40mm
US $ 19.53
US $ 20.56
-5%
(5.0)
Microminiature M3M4M5 Inductive Proximity Switch Sensor DC Three Wire 24V Metal Sensing Switch
US $ 21.10
US $ 22.21
-5%
(5.0)
Wood Plastic Square Capacitive Proximity Switch Non-Metal Detection Liquid Glass Detection Sensor
US $ 23.23
US $ 24.45
-5%
(5.0)
Intelligent Stainless Steel Conductivity Electrode TDS Salinity Meter RS485 Conductivity Sensor
US $ 63.35
US $ 66.69
-5%
(5.0)
AGV 16-bit Magnetic Navigation Sensor MGS-16FP RS232/RS485/CAN/NPN-OC Switching IO
US $ 129.10
US $ 135.89
-5%
(5.0)
Waterproof Flush Membrane Pressure Transmitter Diaphragm Hygienic Cement Glue 4-20ma Anti-blocking Pressure Sensor
US $ 70.29
US $ 73.99
-5%
(5.0)
F28335 Development Board DSP Development Board High Precision AD Acquisition Board DA Conversion AD Signal Acquisition Board
US $ 188.75
US $ 200.80
-6%
(5.0)
KNX/232 KNX/485 Converter KNX to Modbus
US $ 73.40
US $ 78.08
-6%
(5.0)
High-power DIY Disc Permanent Magnet Ironless Generator Low Speed High Efficiency Wind Hydraulic Free Energy Exploration
US $ 613.45
US $ 652.60
-6%
(5.0)
AK4499EXEQ I2S/DSD Audio DAC Decoder 32bit 1536KHZ DSD1024
US $ 96.50
US $ 102.66
-6%
(5.0)
Inverter Air Conditioner Module Starter to Determine the Fault with the Module Board Communication to Start the Compressor
US $ 22.81
US $ 24.01
-5%
(5.0)
Rectangular Heavy-duty Connector HE-6 Core 10 Pin 16 Holes 32 Bits 48 Core 24 Aviation Industrial Plug Socket Hot Runner
US $ 21.25
US $ 22.61
-6%
(5.0)
Alumina ceramic sheet TO-220/247/264/3/3P1 power tube heat conduction mos tube insulation ceramic gasket
US $ 11.72
US $ 12.47
-6%
(5.0)
Pure Copper Pulse Vibrator Plate Vibration Direct Vibration Feeder EI-A Type Silicon Steel High-power Electromagnet
US $ 50.43
US $ 53.65
-6%
(5.0)
232 to 485 Converter RS232 to RS485 Communication Converter Passive
US $ 27.06
US $ 28.79
-6%
(5.0)
PogoPin Connector Probe 4P Connector 6P Gold-plated Charging Conductive Test Pin Thimble Spring Pin Probe
US $ 9.58
US $ 10.19
-6%
(5.0)
High Temperature Filtration Separation Gas Diffusion Titanium Fiber Paper Water Treatment Filtration Electrolysis Tank Titanium
US $ 59.56
US $ 62.69
-5%
(5.0)
Voltage to Current Module 0-5V/0-10V to 0-85/100/165/200mA Current Analog Transmitter
US $ 37.57
US $ 39.55
-5%
(5.0)

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Zc01 Office Face Recognition Attendance Machine Access Control Integrated Machine Card Swipe Password Fingerprint Access Control
US $ 182.84
(5.0)
Biometric Face Recognition Fingerprint Scanner Employee Work Facial Time Attendance Machine Real Time Upload Customizable WiFi
US $ 596.88
(5.0)
Multi-Biometric Attendance Machine with 5000 Fingerprint Storage Mask Detection Alarm Output Time Recording Product
US $ 118.75
(5.0)
B04C-RTU5024 GSM Door Opener Relays Wireless Remote Access Control Kit 4G Home Security Device Free Call Functionality
US $ 44.03
US $ 73.39
-40%
(5.0)
Zc01 Biometric Face & Fingerprint Recognition Time Attendance Access Control Device Terminal Time Recording Product
US $ 218.41
(5.0)
SIP Intercom Voice Control Door Bell Camera Smart Home Intercom Kit for Outdoor RFID Control Waterproof
US $ 66.99
US $ 223.31
-70%
(5.0)
ZK-TA1200 Facial and Fingerprint Recognition Time Attendance and Access Control Device with ADMS Function
US $ 413.48
(5.0)
AC100-260V DC12V 5A Universal power supply for door access control system with backup Battery interface
US $ 25.74
US $ 26.00
-1%
(5.0)
TTHotel Elevator Lift Access Controller Elevator Floor Control Car Roof Relay Panel with Expansion Interface Cascade Board 8-64F
US $ 102.00
US $ 145.72
-30%
(5.0)
Zc01 Enterprise Version Facial Recognition Fingerprint Attendance Machine 5-inch Door Access Control Systems with Password
US $ 267.25
(5.0)
brand new original BMXFTB2010
US $ 29.67
(5.0)
32 Bit Metal Shell Access Control System TCP/IP Four Door Controller Moisture-proof Anti static Anti surge
US $ 86.17
(5.0)