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Contactors are divided into AC contactors (voltage AC) and DC contactors (voltage DC), which are used in power, power distribution and power consumption. Broadly speaking, contactor refers to an electrical appliance that uses the current flowing through the coil to generate a magnetic field and close the contact in order to control the load. main features The AC contactor uses the main contact to open and close the circuit and the auxiliary contact to turn on the control circuit. The main contact is generally normally open contact, while the auxiliary contact often has two pairs of normally open contact and normally closed contact. Small contactors are often used as intermediate relays to cooperate with the main circuit. The contact of AC contactor is made of silver tungsten alloy, which has good conductivity and high temperature ablation resistance. The power of AC contactor action comes from the magnetic field generated by AC through the coil with iron core. The electromagnet core is composed of two "mountain" shaped young silicon steel sheets. One of the fixed iron core is sleeved with coil, and the working voltage can be selected. In order to stabilize the magnetic force, a short-circuit ring is added to the suction surface of the iron core. After the AC contactor loses power, it returns by spring. The other half is a movable iron core, whose structure is the same as that of a fixed iron core, which is used to drive the closing and breaking of the main contact and auxiliary contact. Contactors above 20 amps are equipped with arc extinguishing cover, which can quickly break the arc and protect the contact by using the electromagnetic force generated when the circuit is disconnected. The contactor can operate at high frequency. When it is used as the power on and off control, the maximum operation frequency can reach 1200 times per hour. The service life of contactors is very long. The mechanical life is usually millions to 10 million times, and the electrical life is generally hundreds of thousands to millions of times. working principle The working principle of the contactor is: when the contactor coil is energized, the coil current will generate a magnetic field. The generated magnetic field causes the static iron core to generate electromagnetic suction to attract the moving iron core, and drives the AC contactor to act. The normally closed contact is disconnected and the normally open contact is closed. The two are linked. When the coil is powered off, the electromagnetic suction disappears, and the armature is released under the action of the release spring to restore the contact, open the normally open contact and close the normally closed contact. The working principle of DC contactor is a little similar to that of temperature switch.

Minimum Order: 1 bags

Circuit breaker refers to the switching device that can close, carry and disconnect the current under normal circuit conditions, and can close, carry and disconnect the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low- voltage circuit breakers according to their scope of use. The division of high- voltage and low-voltage boundaries is relatively vague. Generally, those above 3KV are called high-voltage appliances. The circuit breaker can be used to distribute electric energy, start the asynchronous motor infrequently, and protect the power line and motor. When they have serious overload, short circuit, undervoltage and other faults, it can automatically cut off the circuit. Its function is equivalent to the combination of fuse switch and over and under heating relay. Moreover, it is generally not necessary to change the parts after breaking the fault current. At present, it has been widely used. Power distribution is an extremely important link in the generation, transmission and use of electricity. The distribution system includes transformers and various high and low voltage electrical equipment, and the low voltage circuit breaker is an electrical appliance with large amount and wide range of use. working principle The circuit breaker is generally composed of contact system, arc extinguishing system, operating mechanism, release, shell, etc. In case of short circuit, the magnetic field generated by large current (generally 10 to 12 times) overcomes the reaction spring, the release pulls the operating mechanism to act, and the switch trips instantaneously. In case of overload, the current increases, the calorific value intensifies, and the bimetallic sheet deforms to a certain extent to promote the action of the mechanism (the greater the current, the shorter the action time). For the electronic type, the transformer is used to collect the current of each phase and compare it with the set value. When the current is abnormal, the microprocessor sends a signal to make the electronic release drive the operating mechanism. The function of circuit breaker is to cut off and connect the load circuit and cut off the fault circuit to prevent the expansion of accident and ensure safe operation. The high-voltage circuit breaker needs to break the arc with 1500V and current of 1500-2000a. These arcs can be elongated to 2M and still continue to burn. Therefore, arc extinguishing is a problem that must be solved for high voltage circuit breaker. The principle of arc blowing and arc extinguishing is mainly to cool the arc and reduce heat dissociation. On the other hand, arc blowing lengthens the arc to strengthen the recombination and diffusion of charged particles, and blow away the charged particles in the arc gap to quickly restore the insulation strength of the medium. Low voltage circuit breaker, also known as automatic air switch, can be used to turn on and off load circuit, and can also be used to control infrequently started motor. Its function is equivalent to the sum of some or all functions of knife switch, overcurrent relay, voltage loss relay, thermal relay and leakage protector. It is an important protective appliance in low-voltage distribution network. Low voltage circuit breaker has many protection functions (overload, short circuit, undervoltage protection, etc.), adjustable action value, high breaking capacity, convenient operation, safety and other advantages, so it is widely used. Structure and working principle low voltage circuit breaker is composed of operating mechanism, contact, protection device (various releases), arc extinguishing system, etc. The main contact of low-voltage circuit breaker is closed manually or electrically. After the main contact is closed, the free tripping mechanism locks the main contact in the closing position. The coil of the overcurrent release and the thermal element of the thermal release are connected in series with the main circuit, and the coil of the undervoltage release is connected in parallel with the power supply. In case of short circuit or serious overload of the circuit, the armature of the overcurrent release is pulled in to make the free tripping mechanism act, and the main contact disconnects the main circuit. When the circuit is overloaded, the thermal element of the thermal release generates heat, which bends the bimetallic sheet and pushes the free release mechanism to act. When the circuit is under voltage, the armature of the under voltage release is released. It also makes the free tripping mechanism act. The shunt release is used for remote control. During normal operation, its coil is powered off. When distance control is required, press the start button to power on the coil.

Minimum Order: 1 bags

Description: 100% Nitrile Snug-fitting ambidextrous gloves with textured fingertips for improved grip. These premium quality gloves are latex-free, powder-free, and safe for food handling, sanitation, home, automotive, travel, etc Ideal for most workplaces as our personal protective gloves are worn worldwide in most common workplace environments. They are used by salon and spa professionals, food service, retailers, warehouses, offices, schools, indoors and outdoors. Technical Parameters: Product Disposable medical nitrile gloves Material nitrile Size XS,S,M,L,XL .etc Color blue,white,purple,black Grade AQL1.5,AQL2.5,AQL4.0 Length(mm) ≥300 Width(mm) XS 76±6 S 84±3 M 94±3 L 105±3 XL 113±3 Single wall thickness(mm) finger ≥0.08 Palm ≥0.05 Elongation at break(％) ≥500 Tensile Strength(Mpa) ≥14 Quality Standard ASTM D6319 package 100 pcs/box, 10 boxes/carton weight 3.5-7g

Summary This tracker is a new product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. It can track and monitor remote target by SMS or internet. waterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car trackerwaterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car tracker Features * universal for Car / motorcycle / E-bike etc; * Mini / waterproof IP67 ; * Accept wide voltage from 8V-80V ; * Support ACC / over speed / geo-fence / move / SOS / shock alarm ; * Support remote stop engine ; * Free Android IOS APP & web based platform for real time tracking ; Main Function Description 1.For all models vehicles(8-80V) 2.Location based service(LBS) + GPS double tracking solution 3.GPS blind spot alert 4. Sleep mode 5.Save GPRS traffic mode(Money save mode) 6.Anti-theft gsm alarms: Movement alarm Geo-fence alarm Over speed alarm ext.power off alarm low battery alarm Built in Acceleration Sensor Alarm 7.Remotey shutdown engine . 8.Support MiroSD 9.Built-in memory for 16,000 positions 10.SMS tracking on cell phone with google map link 11.Absolute street address by SMS 12.Web server, free PC tracking soft, Mobile phone APP

Minimum Order: 50

Summary This tracker is a new product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. It can track and monitor remote target by SMS or internet. waterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car trackerwaterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car tracker Features * universal for Car / motorcycle / E-bike etc; * Mini / waterproof IP67 ; * Accept wide voltage from 8V-80V ; * Support ACC / over speed / geo-fence / move / SOS / shock alarm ; * Support remote stop engine ; * Free Android IOS APP & web based platform for real time tracking ; Main Function Description 1.For all models vehicles(8-80V) 2.Location based service(LBS) + GPS double tracking solution 3.GPS blind spot alert 4. Sleep mode 5.Save GPRS traffic mode(Money save mode) 6.Anti-theft gsm alarms: Movement alarm Geo-fence alarm Over speed alarm ext.power off alarm low battery alarm Built in Acceleration Sensor Alarm 7.Remotey shutdown engine . 8.Support MiroSD 9.Built-in memory for 16,000 positions 10.SMS tracking on cell phone with google map link 11.Absolute street address by SMS 12.Web server, free PC tracking soft, Mobile phone APP

Minimum Order: 50

Summary This tracker is a new product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. It can track and monitor remote target by SMS or internet. waterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car trackerwaterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car tracker Features * universal for Car / motorcycle / E-bike etc; * Mini / waterproof IP67 ; * Accept wide voltage from 8V-80V ; * Support ACC / over speed / geo-fence / move / SOS / shock alarm ; * Support remote stop engine ; * Free Android IOS APP & web based platform for real time tracking ; Main Function Description 1.For all models vehicles(8-80V) 2.Location based service(LBS) + GPS double tracking solution 3.GPS blind spot alert 4. Sleep mode 5.Save GPRS traffic mode(Money save mode) 6.Anti-theft gsm alarms: Movement alarm Geo-fence alarm Over speed alarm ext.power off alarm low battery alarm Built in Acceleration Sensor Alarm 7.Remotey shutdown engine . 8.Support MiroSD 9.Built-in memory for 16,000 positions 10.SMS tracking on cell phone with google map link 11.Absolute street address by SMS 12.Web server, free PC tracking soft, Mobile phone APP

Minimum Order: 50

SMD transistor TFZ591 SOT223 Model/Specification: TFZ591 Brand/Trademark: PAGOODA Package form: SOT-223 Environmental category: lead-free environmental protection Installation method: patch type Packing method: tape and tape packaging Power characteristics: low power frequency Features: IF Polarity: PNP type Our chip triode products are mainly used in: 1. Power Products 2. Lighting equipment 3. Automotive Electronics 4. Medical Equipment 5. Intelligent products 6. Network communication equipment 7. Instrumentation A chip triode is a semiconductor device with two PN junctions, named because it has three electrode leads. SMD electronic components supplier - PingShang Technology specializes in supplying SMD triode products with complete specifications. We must have what others have, and we can have what others do not! Can be customized production to meet your different needs!

Minimum Order: 4000

Summary This tracker is a new product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. It can track and monitor remote target by SMS or internet. waterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car trackerwaterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car tracker Features * universal for Car / motorcycle / E-bike etc; * Mini / waterproof IP67 ; * Accept wide voltage from 8V-80V ; * Support ACC / over speed / geo-fence / move / SOS / shock alarm ; * Support remote stop engine ; * Free Android IOS APP & web based platform for real time tracking ; Main Function Description 1.For all models vehicles(8-80V) 2.Location based service(LBS) + GPS double tracking solution 3.GPS blind spot alert 4. Sleep mode 5.Save GPRS traffic mode(Money save mode) 6.Anti-theft gsm alarms: Movement alarm Geo-fence alarm Over speed alarm ext.power off alarm low battery alarm Built in Acceleration Sensor Alarm 7.Remotey shutdown engine . 8.Support MiroSD 9.Built-in memory for 16,000 positions 10.SMS tracking on cell phone with google map link 11.Absolute street address by SMS 12.Web server, free PC tracking soft, Mobile phone APP

Minimum Order: 50

Summary This tracker is a new product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. It can track and monitor remote target by SMS or internet. waterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car trackerwaterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car tracker Features * universal for Car / motorcycle / E-bike etc; * Mini / waterproof IP67 ; * Accept wide voltage from 8V-80V ; * Support ACC / over speed / geo-fence / move / SOS / shock alarm ; * Support remote stop engine ; * Free Android IOS APP & web based platform for real time tracking ; Main Function Description 1.For all models vehicles(8-80V) 2.Location based service(LBS) + GPS double tracking solution 3.GPS blind spot alert 4. Sleep mode 5.Save GPRS traffic mode(Money save mode) 6.Anti-theft gsm alarms: Movement alarm Geo-fence alarm Over speed alarm ext.power off alarm low battery alarm Built in Acceleration Sensor Alarm 7.Remotey shutdown engine . 8.Support MiroSD 9.Built-in memory for 16,000 positions 10.SMS tracking on cell phone with google map link 11.Absolute street address by SMS 12.Web server, free PC tracking soft, Mobile phone APP

Minimum Order: 50

Produce Description Product Name: DIA2.3M 38mm Pole Half-side Garden Crank Sunshade Parasol Open Size: φ230x130xH256cm Pole: Alu., DIA 38mm Ribs: steel, 5pcs, 12x18mm Frame finish: powder coating Fabric: 180G polyester, with window hole N.W./G.W.: 3.7/4.3KG Half-sided design, standing against the wall, can provide you with a good corner for casual chat, saving space. Polyester fabric is waterproof and UV resistant, and fade resistant, easy to clean, suitable for outdoor use. Easily Operation Features: operates with crank lift for easily opening and closing, a wind vent at the top to allow air flow and reduce the wind pressure to enhance stability.

Summary This tracker is a new product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. It can track and monitor remote target by SMS or internet. waterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car trackerwaterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car tracker Features * universal for Car / motorcycle / E-bike etc; * Mini / waterproof IP67 ; * Accept wide voltage from 8V-80V ; * Support ACC / over speed / geo-fence / move / SOS / shock alarm ; * Support remote stop engine ; * Free Android IOS APP & web based platform for real time tracking ; Main Function Description 1.For all models vehicles(8-80V) 2.Location based service(LBS) + GPS double tracking solution 3.GPS blind spot alert 4. Sleep mode 5.Save GPRS traffic mode(Money save mode) 6.Anti-theft gsm alarms: Movement alarm Geo-fence alarm Over speed alarm ext.power off alarm low battery alarm Built in Acceleration Sensor Alarm 7.Remotey shutdown engine . 8.Support MiroSD 9.Built-in memory for 16,000 positions 10.SMS tracking on cell phone with google map link 11.Absolute street address by SMS 12.Web server, free PC tracking soft, Mobile phone APP

Minimum Order: 50

Summary This tracker is a new product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. It can track and monitor remote target by SMS or internet. waterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car trackerwaterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car tracker Features * universal for Car / motorcycle / E-bike etc; * Mini / waterproof IP67 ; * Accept wide voltage from 8V-80V ; * Support ACC / over speed / geo-fence / move / SOS / shock alarm ; * Support remote stop engine ; * Free Android IOS APP & web based platform for real time tracking ; Main Function Description 1.For all models vehicles(8-80V) 2.Location based service(LBS) + GPS double tracking solution 3.GPS blind spot alert 4. Sleep mode 5.Save GPRS traffic mode(Money save mode) 6.Anti-theft gsm alarms: Movement alarm Geo-fence alarm Over speed alarm ext.power off alarm low battery alarm Built in Acceleration Sensor Alarm 7.Remotey shutdown engine . 8.Support MiroSD 9.Built-in memory for 16,000 positions 10.SMS tracking on cell phone with google map link 11.Absolute street address by SMS 12.Web server, free PC tracking soft, Mobile phone APP

Minimum Order: 50

Description ZTE ZXHN F670L FTTH is a dual band Gigabit Premium triple-play GPON gateway. It comes with 1GE&3FE LAN ports, one phone port and next generation multi-stream Wi-Fi, operating simultaneously in 2.4GHz 2×2 over 802.11n and 5GHz 2×2 over 802.11ac. Based on customer requirements, the maximum 5dBi gain antennas can enhance the Wi-Fi coverage area and improve the performance. Features Meeting different scenarios requirements to provide different interfaces such as FE, GE, VoIP, E1 WiFi USB and other interfaces to meet the requirements of FTTH, FTTO and FTTB application modes, not only for the home user but also for commercial users. Easy for deployment Mounting mode and fibre coiling make installation very easy, with the batch configuration on EMS to ensure zero configurations on the ONT side. Easy for troubleshooting Supporting ONT signal tracing and performance monitoring, and quickly locate the fault on ONT. Particular power saving Supporting status monitoring when ONT is free, and enter low power consumption state; Optical module can also enter a low-power state when the battery is working.

Summary This tracker is a new product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. It can track and monitor remote target by SMS or internet. waterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car trackerwaterproof Mini gps tracker car real time tracking on Free APP tk311 coban gps gsm car tracker Features * universal for Car / motorcycle / E-bike etc; * Mini / waterproof IP67 ; * Accept wide voltage from 8V-80V ; * Support ACC / over speed / geo-fence / move / SOS / shock alarm ; * Support remote stop engine ; * Free Android IOS APP & web based platform for real time tracking ; Main Function Description 1.For all models vehicles(8-80V) 2.Location based service(LBS) + GPS double tracking solution 3.GPS blind spot alert 4. Sleep mode 5.Save GPRS traffic mode(Money save mode) 6.Anti-theft gsm alarms: Movement alarm Geo-fence alarm Over speed alarm ext.power off alarm low battery alarm Built in Acceleration Sensor Alarm 7.Remotey shutdown engine . 8.Support MiroSD 9.Built-in memory for 16,000 positions 10.SMS tracking on cell phone with google map link 11.Absolute street address by SMS 12.Web server, free PC tracking soft, Mobile phone APP

Minimum Order: 50