Universal 433MHz 2/4 buttons keyfob KL300-4K 1.Description Shenzhen Kelvin 4-Channel Universal RF Remote Control Duplicator suitable for cars, gates, garage door openers, barriers, home security systems, etc. This gadget operates at 433.92MHz frequency (IMPORTANT: leave us a message along with order if you want 315MHz or other frequency), capable of copying most fixed code or learning code RF remote controls face to face, so you will always have a backup remote control. Please note that the frequency band 286MHz to 400MHz can't be used in the EU, which means you're likely to use a 433.92MHz / 418MHz / 868MHz remote control if you are in the EU. Size and weight NOTICE: Please check your existing remote control with our compatibility list before ordering. 4.Methods of operation 1, Clear out code: To Clear up test stored rf signal memory from factory by pressing the locking key and unlock the key at the same time, two seconds later, LED indicator light flashes three times, followed by a continuous fast blinking. Indicates that the remote control codes stored has been cleared out. 2, Duplicating (learning)  Hands are holding remote control , and the other are holding the duplicating remote control, 2 remote controls put together as close as possible, while pressing the remote controls two match button,(eg: A-A',B-B') three seconds later, LED indicator light flashes three times, followed by a continuous fast blinking. This indicates that this copy of the remote control buttons are same as copied on the remote control button codes . Several other keys are also according to the above approach to learning. 3, Recovery code   If the code copied have been mistakenly removed the remote control, you do not worry, the remote control can restore yourself. Method is pressing (up-down eg: locking key and bell key) two buttons (metal shell remote control on the left, the plastic shell remote control on the right) at the same time ,3 seconds later, LED indicator light flashes three times, followed by a continuous fast blinking. This indicates that the original remote control codes have been restored. The other way, you can delete all and relearn them again.  5. Shipping 1) Express: DHL, FedEx, UPS, TNT, EMS, etc. 2) By air 3) By sea 4) By special line Depends on buyer's requirement.  6.FAQ 1) What is your warranty period? Generally, we provide 1 year warranty for all our products unless otherwise mentioned. (Some are 2 years.) For DOA (Defective On Arrival) items, which will be replaced or refund, please inform us within 3 days of arrival, please also keep all components and original packaging as further checking maybe required, faulty items must be returned for repair or exchange.  2) If i don't know how to use the products, what can i do? Pls contact us whenever you need our help, even we are not online. You can write email to us, or contact us byTrademanager, Skype, and other IM tools. We are all very glad to answer your questions.  3) What certifications do you have? Most of our products are approved with CE certification, some are with FCC. If you have any other requriements with certifications, we also would like to help you.  7. Our Service 1. Accept OEM, ODM &silk-screen printing you logo on the shell. 2. Response in 10 hours. 3. Experienced R&D staff. 4. Professional SMT equipments. 5. Accept payment via T/T, Paypal, Western Union, Escrow, and so on. 6. Delivery by DHL,UPS,EMS or by sea as your requirments.  8. For order 1).Accept OEM. 2).Print logo on the case and pakage 3).Payment Details :30% deposite,70% balance before shipment. Payment accept T/T, Western union, PayPal, optional) 4).Minimum Order:100 pcs (accept trial order) 5).Delivery Details: within 3-5 days depends on order quantity.  Universal 433MHz 2/4 buttons keyfob KL300-4K 1.Description Shenzhen Kelvin 4-Channel Universal RF Remote Control Duplicator suitable for cars, gates, garage door openers, barriers, home security systems, etc. This gadget operates at 433.92MHz frequency (IMPORTANT: leave us a message along with order if you want 315MHz or other frequency), capable of copying most fixed code or learning code RF remote controls face to face, so you will always have a backup remote control. Please note that the frequency band 286MHz to 400MHz can't be used in the EU, which means you're likely to use a 433.92MHz / 418MHz / 868MHz remote control if you are in the EU. Size and weight NOTICE: Please check your existing remote control with our compatibility list before ordering. 4.Methods of operation 1, Clear out code: To Clear up test stored rf signal memory from factory by pressing the locking key and unlock the key at the same time, two seconds later, LED indicator light flashes three times, followed by a continuous fast blinking. Indicates that the remote control codes stored has been cleared out. 2, Duplicating (learning)  Hands are holding remote control , and the other are holding the duplicating remote control, 2 remote controls put together as close as possible, while pressing the remote controls two match button,(eg: A-A',B-B') three seconds later, LED indicator light flashes three times, followed by a continuous fast blinking. This indicates that this copy of the remote control buttons are same as copied on the remote control button codes . Several other keys are also according to the above approach to learning. 3, Recovery code   If the code copied have been mistakenly removed the remote control, you do not worry, the remote control can restore yourself. Method is pressing (up-down eg: locking key and bell key) two buttons (metal shell remote control on the left, the plastic shell remote control on the right) at the same time ,3 seconds later, LED indicator light flashes three times, followed by a continuous fast blinking. This indicates that the original remote control codes have been restored. The other way, you can delete all and relearn them again.  5. Shipping 1) Express: DHL, FedEx, UPS, TNT, EMS, etc. 2) By air 3) By sea 4) By special line Depends on buyer's requirement.  6.FAQ 1) What is your warranty period? Generally, we provide 1 year warranty for all our products unless otherwise mentioned. (Some are 2 years.) For DOA (Defective On Arrival) items, which will be replaced or refund, please inform us within 3 days of arrival, please also keep all components and original packaging as further checking maybe required, faulty items must be returned for repair or exchange.  2) If i don't know how to use the products, what can i do? Pls contact us whenever you need our help, even we are not online. You can write email to us, or contact us byTrademanager, Skype, and other IM tools. We are all very glad to answer your questions.  3) What certifications do you have? Most of our products are approved with CE certification, some are with FCC. If you have any other requriements with certifications, we also would like to help you.  7. Our Service 1. Accept OEM, ODM &silk-screen printing you logo on the shell. 2. Response in 10 hours. 3. Experienced R&D staff. 4. Professional SMT equipments. 5. Accept payment via T/T, Paypal, Western Union, Escrow, and so on. 6. Delivery by DHL,UPS,EMS or by sea as your requirments.  8. For order 1).Accept OEM. 2).Print logo on the case and pakage 3).Payment Details :30% deposite,70% balance before shipment. Payment accept T/T, Western union, PayPal, optional) 4).Minimum Order:100 pcs (accept trial order) 5).Delivery Details: within 3-5 days depends on order quantity.  Domestic communication, 4 g module in addition to support two kinds of LTE FDD LTE/TD - LTE standard, also compatible with 2 g / 3 g down, support td-scdma/WCDMA/EDGE/GP/GSM/CDMA1X/EVDO mode. The data service downstream rate can reach up to 100Mbps, the uplink rate can reach up to 50Mbps, providing customers with high-speed Internet access and wireless data connection and other functions. In addition to providing high-speed data access, it also provides voice, SMS, communication book and other functions, which can be widely used in notebook, tablet, touch screen communication devices, smart phones, video surveillance, multimedia mobile phones and vehicle equipment and other terminal products and vertical applications. Today, I will introduce you to what is 4G module and how to use 4G module. 4G Module,4G Router Module,4G Wifi Module,4G Lte Wifi Module Shenzhen MovingComm Technology Co., Ltd. , https://www.movingcommiot.com
2.Specification
Height:
58.0mm
Width:
39.0mm
Depth:
14.0mm
Weight:
 
 
 
 
Â
2.Specification
Height:
58.0mm
Width:
39.0mm
Depth:
14.0mm
Weight:
Â
Â
Â
Â
Â
What is 4G module
4G module said TD-LTE and FDD-LTE and other LTE network standards are collectively referred to. It has the characteristics of fast communication speed, wide network spectrum and flexible communication. 4G module refers to a product whose hardware is loaded to the specified frequency band, software supports the standard LTE protocol, and software and hardware are highly integrated and modular. The hardware integrates radio frequency and baseband on a small PCB board to complete wireless receiving, transmitting and baseband signal processing functions. The software supports voice dialing, SMS sending and receiving, dial-up networking and other functions.
Second, how to use 4G module
The 4G module is usually inserted into the circuit board or the patch module is welded to the circuit board, and the corresponding SIM card is inserted, and the network is connected through the 4G cellular network. In the common transparent transmission mode, data can be directly sent to the target server through the 4G module, and the 4G module can receive data from the server at the same time, and send the data to the serial port, which is received by the serial port device connected to the 4G module. Users do not need to pay special attention to the data conversion process between serial port data and network data packets, only need to insert the module to the target position, simple connection and parameter setting, you can achieve transparent transmission between the serial port and the network end.
What is the 4G module How does the 4G module work
4G module, also known as 4G transmission module, 4G communication module, 4G LTE module. It is a kind of hardware loaded to the specified frequency band, the software supports the standard LTE protocol, and the software and hardware are highly integrated modular products, with good compatibility, fast communication speed, large amount of communication data, wide network spectrum, communication flexibility and other characteristics, widely used in electric power, environmental protection, finance, industrial automation and other fields.
The working principle of 4G module
It has the characteristics of fast communication speed, wide network spectrum and flexible communication. The hardware integrates radio frequency and baseband on a small PCB board to complete wireless receiving, transmitting and baseband signal processing functions. The software supports voice dialing, SMS sending and receiving, dial-up networking and other functions.
Through high-speed networking, the 4G module transmits all terminal business data and equipment operating status to the business center in real time. Through the management monitoring platform, the terminal equipment operating status can be monitored in real time and equipment faults can be timely checked. The efficiency has been greatly improved in many aspects such as operating cost, operation scale and service timeliness. Suitable for shared massage chair, public charging pile, vending machine, vehicle system, environmental monitoring, power remote monitoring and other industries.
4G module refers to a product whose hardware is loaded to the specified frequency band, software supports the standard LTE protocol, and software and hardware are highly integrated and modular. It has the characteristics of fast communication speed, wide network spectrum and flexible communication. The hardware integrates radio frequency and baseband on a small PCB board to complete wireless receiving, transmitting and baseband signal processing functions. The software supports voice dialing, SMS sending and receiving, dial-up networking and other functions. Through high-speed networking, the 4G module transmits all terminal business data and equipment operating status to the business center in real time. Through the management monitoring platform, the terminal equipment operating status can be monitored in real time and equipment faults can be timely checked. The efficiency has been greatly improved in many aspects such as operating cost, operation scale and service timeliness.
Good compatibility
4G module supports FDD LTE/TD-LTE two LTE standards, can also be backward compatible with 2G/3G, support LTE-FDD, LET-TDD, WCDMA, TD-SCDMA, CDMA, GSM and other bands.
Large amount of communication data
4G module downstream rate can reach up to 150Mbps, uplink rate can reach up to 50Mbps, to provide customers with high-speed Internet access and wireless data connection and other functions, suitable for large data transmission applications, such as: remote video surveillance.
High communication speed
The 4G module has a lower ping value than the 2G/3G module, and it takes less time for the module to send data packets to receive the response from the server, which is suitable for applications requiring high response speed, such as remote alarm.
Model NO.: KL300-4K
Voltage: 12V
Material: Plastic
Battery Type: 12V 23A
Model Name: Face to Face Copy Remote
Buttons Sum: 2/4
Transmitting Range: 50m-100m
Encoding Type: Copy Remote
Standby Current: 12mA
Weight: 32g
Modulation Way: Ask/Ook
Frequency: 315MHz / 433.92MHz / 250-450MHz
Color: Plastic Case
Logo: Customized
Trademark: Kelvin
Transport Package: Plastic Bag & Carton
Specification: 58*39*14mm
Origin: Shenzhen, China
HS Code: 8526920000
Model NO.: KL300-4K
Voltage: 12V
Material: Plastic
Battery Type: 12V 23A
Model Name: Face to Face Copy Remote
Buttons Sum: 2/4
Transmitting Range: 50m-100m
Encoding Type: Copy Remote
Standby Current: 12mA
Weight: 32g
Modulation Way: Ask/Ook
Frequency: 315MHz / 433.92MHz / 250-450MHz
Color: Plastic Case
Logo: Customized
Trademark: Kelvin
Transport Package: Plastic Bag & Carton
Specification: 58*39*14mm
Origin: Shenzhen, China
HS Code: 8526920000
32.0grams
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3. Operation Key features
Encoder IC compatibility list
32.0grams
Â
3. Operation Key features
Encoder IC compatibility list