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Electrical, Automated And Cables

Switches

Automation Control
Switches
Automation Control
Hvac Fans Thermal Management
Hvac Fans Thermal Management
Cables

Fuses Circuit Breakers
Cables
Fuses Circuit Breakers
Lighting

Relays And Signal
Lighting
Relays And Signal
Enclosures Server Racks
Enclosures Server Racks

Mechanical Products And Tools

IT, Testing And Security Equipment

Personal Protective

Site Safety
Personal Protective
Site Safety
Office

Security Ironmongery
Office
Security Ironmongery
Test Measurement

PC Peripherals
Test Measurement
PC Peripherals
Facilities Cleaning Maintenance
Facilities Cleaning Maintenance

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Photo Resistives:

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光敏電阻（photoresistor or light-dependent resistor，后者縮寫為ldr）或光導(dǎo)管（photoconductor），常用的制作材料為硫化鎘，另外還有硒、硫化鋁、硫化鉛和硫化鉍等材料。這些制作材料具有在特定波長(zhǎng)的光照射下，其阻值迅速減小的特性。這是由于光照產(chǎn)生的載流子都參與導(dǎo)電，在外加電場(chǎng)的作用下作漂移運(yùn)動(dòng)，電子奔向電源的正極，空穴奔向電源的負(fù)極，從而使光敏電阻器的阻值迅速下降。