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1. Stereo audio, wide frequency response, high efficiency, low distortion and low noise, good sound effect2. There is a volume adjuster, easy to adjust the sound3. With power reverse connection protection, short circuit protection and overheat protection4. Wide supply voltage and two input modes, higher efficiency5. Material: PCB circuit board6. Power supply voltage: DC 5-24V7. Bluetooth version: 5.08. Transmission distance: about 15 meters (visible and unobstructed)9. Number of channels: two channels (stereo)10. Output power: 20Wx2 12V 4 ohms, 30Wx2 16V 4 ohms, 30Wx2 21V 8 ohms, 40Wx2 24V 8 ohms11. Adapter speaker (40-200W): 4 ohms (5-16V power supply), 8 ohms (5-24V power supply)12. Module protection mechanism: power reverse connection/short circuit/self-recovery overheating protection13. Size: about 5.08x3.8x1.815cmPrecautions:1. Keep a safe distance from the router to avoid wifi interference2. It is recommended to use 5-24V DC power supply voltage, higher than 26V chip will burn3. The power supply should be within 16V when connected to a 4-ohm speaker, and within 24V when connected to an 8-ohm speaker4. The power supply current is recommended to be more than 2A5. The speaker cable should not be too long, it is recommended to be within 1m6. Pay attention to electrostatic protection. Before touching the power amplifier board, you need to release the static electricity on your hands to avoid the breakdown of the chip by static electricity. The Bluetooth chip is more sensitive to static electricity.7. It is recommended that the rated power of the speaker is 40W and above to avoid the speaker being overheated and burnedSpecification: Package Weight One Package Weight 0.05kgs / 0.10lb One Package Size 8cm * 6cm * 2.5cm / 3.15inch * 2.36inch * 0.98inch Qty per Carton 500 Carton Weight 27.00kgs / 59.52lb Carton Size 50cm * 50cm * 54cm / 19.69inch * 19.69inch * 21.26inch Loading Container 20GP: 197 cartons * 500 pcs = 98500 pcs40HQ: 458 cartons * 500 pcs = 229000 pcs

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Feature1. Built-in wireless driver, installation without CD-ROM, get rid of the tedious wireless driver installation process 2. Support new generation of WiFi6, fast speed, low latency, large capacity, more secure 3. External 4 x 5dBi high-gain antennas with strong signal, provide better wireless penetration, whether it is games, video, audio, video, can be smooth and comfortable 4. Equipped 1.2M extension cable, more flexible placement, support USB3.0, backward compatible with USB2.0 and other interfaces 5. Compatible with mainstream Win 10/11 systems 6. Support for USB3.0, faster and more efficient transmission, and backward compatibility with USB2.0. Specifications1. Chipset: RTL8832BU 2. Antenna: With 4x5dBi high gain antenna 3. Wireless frequency: 2.412GHz-2.484GHz, 5.180-5.825GHz 4. Transmission rate: 1800Mbps 5. Wireless standards: IEEE 802.11a/b/g/n/ac/ax 6. Interface: USB3.0, USB2.0 7. Encryption: WPA2, WPA3 8. Support system: Windows 10 (32 bits , 64 bits), Windows 11(64 bits ) 9. Working environment: - Operating Temperature: 0-40 degree Celsius - Storage Temperature: -40~70 degree Celsius - Operating Humidity: 10%~90%RH No-condensing - Storage Humidity: 5%~90%RH No-condensing 10. Size: 101mmx98mmx175mmSpecification: General Certificate CE Package Weight One Package Weight 0.30kgs / 0.66lb One Package Size 27.7cm * 12.5cm * 5.8cm / 10.91inch * 4.92inch * 2.28inch Qty per Carton 80 Carton Weight 23.25kgs / 51.26lb Carton Size 61cm * 53cm * 59cm / 24.02inch * 20.87inch * 23.23inch Loading Container 20GP: 139 cartons * 80 pcs = 11120 pcs40HQ: 324 cartons * 80 pcs = 25920 pcs

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1. Material: ABS plastic 2. Strong load-bearing and stable support 3. Place desktop objects, such as remote controls, routers, set-top boxes, speakers, etc., to keep the desktop tidy 4. Easy installation, flexible adjustment, suitable for computer monitors and TV screens 5. Size: 33x16x2cm 6. Weight: 280gSpecification: Package Weight One Package Weight 0.32kgs / 0.70lb One Package Size 31cm * 16cm * 2.5cm / 12.2inch * 6.3inch * 0.98inch Qty per Carton 30 Carton Weight 9.70kgs / 21.38lb Carton Size 48cm * 32cm * 28cm / 18.9inch * 12.6inch * 11.02inch Loading Container 20GP: 620 cartons * 30 pcs = 18600 pcs40HQ: 1439 cartons * 30 pcs = 43170 pcs

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1. Switch 1 independent control 2.4Ghz+5.8Ghz2. The No.2 switch controls 5.2Ghz3. Charging is in DC-12V fast charge mode4. Block all wifi signals (2.4Ghz+5.2Ghz+5.8Ghz), including hotspot and Bluetooth signals5. Radius: 10-15 meters6. Battery: 6800 mAh, continuous operation for 2 hours (new machine state)7. Product size: 8.6x5x18.5cm8. Weight: 700gSpecification: Package Weight One Package Weight 1.15kgs / 2.54lb One Package Size 26cm * 20cm * 11cm / 10.24inch * 7.87inch * 4.33inch Qty per Carton 16 Carton Weight 19.40kgs / 42.77lb Carton Size 54cm * 42cm * 46cm / 21.26inch * 16.54inch * 18.11inch Loading Container 20GP: 255 cartons * 16 pcs = 4080 pcs40HQ: 593 cartons * 16 pcs = 9488 pcs

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1. Drive-free, plug and play, easy to use 2. Support 2.4/5.8G dual frequency, total rate up to 1300M 3. The transmission rate of USB 3.0 interface is up to 5Gbps, and the power supply is stable and effectively improves the transmission stability of the network card 4. Support Win 7/8/8.1/10/XP and other systems 5. The high-gain 6dBi blade antenna effectively increases the receiving and transmission distance, and the antenna can be rotated to accurately send and receive signalsSpecification: Package Weight One Package Weight 0.22kgs / 0.48lb One Package Size 25cm * 10cm * 3cm / 9.84inch * 3.94inch * 1.18inch Qty per Carton 80 Carton Weight 21.90kgs / 48.28lb Carton Size 50cm * 40cm * 30cm / 19.69inch * 15.75inch * 11.81inch Loading Container 20GP: 444 cartons * 80 pcs = 35520 pcs40HQ: 1031 cartons * 80 pcs = 82480 pcs

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SPECIFICATIONSBrand Name: COOLCOLDOrigin: Mainland ChinaHign-concerned Chemical: NoneRadiator Type: Air-cooledSize: 15-inchApplication Laptop Size: 12-17inchUSB Ports: 2Material: Aluminum & PlasticPackage: YesType: Five FansModel Number: F2PLUSCertification: CECertification: FCCCertification: RoHSColor: BlackMaterial: Plastic, MetalProduct Dimensions: 33.3*25*3.6cmProduct Weight: 800gFan Size: 10*10*2cmFan Speed: 1500±10%RPMVoltage: DC5VRated Current: 0.5±10%ARated Power: 2.5±10%WChoice: yes●COOLCOLD laptop cooler is specially designed to cool down up to 15.6 inch laptops. Honeycomb style metal mesh, 1 small fan 4 big fans, flip-up anti-slip pad, 5 adjustable stand height settings, 2 USB ports, adjustable speeds, and USB powered.●The laptop cooling stand is set with a small central fan with two big fans on each side (5 total low noise fans), providing more airflow to keep laptop cool down. At the back of the laptop fan cooling pad, there is a switch wheel that turns fans on and off.●The laptop cooling fan has a metal bar for ergonomic design at the bottom, providing an elevation mechanism, and 5 adjustable stand heights adjustments add more room for laptop and desk, good for laptop heat dissipation and then lowering the temperature.●Compatible with various laptop sizes from 12 up to 15.6 inches, such as Apple MacBook Pro Air, HP, Alienware, Dell, Lenovo, ASUS, etc (USB cable included). The laptop fan can also accurately dissipate heat for your tablet, router, game console.●COOLCOLD provides each customer with a 24-month warranty . If there is any problem with the product you purchased, please feel free to contact us. Package Contents - 1 x Laptop Cooling Stand, 1 x USB cable, 1 x User manual, and lifetime friendly customer service.

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About The Product1. LINEPAUDIO A962 fancier-level HiFi Vacuum Tube Power Headphone Amplifier PreAmp, made of Beijing classic quality 6J9-J vacuum tube, USB-PC supported ASIO sound effect software will give out more professional, full, open-stage, soft and smooth sound, especially applicable to voice, string music, light music, and classical music, the performance of different frequency points is so perfect! Fine at high frequency, strong at low frequency! Easily drive 16??-600 ?? headphone of any class, quiet background without any current background noise! Two sets of audio signal inputs, one is USB signal input (USB-PC), USB cable is connected to PC, plug and play without a drive, directly used as an upscale USB external sound card. The USB port can be also connected to any model of Android mobile phones with OTG function. The other is 3.5mm interface audio signal input and you can connect it to mobile phone, CD, lossless music player or other audio source devices. In case of simultaneous inputs of USB signal and 3.5mm interface signal, 3.5mm interface signal input is preferred. 2. LINEPAUDIO A962 has three sets of audio signals, simultaneously output to meet the interface of different devices (RCA/3.5mm/6.35mm), the output end will deliver to you a real HiFi experience, whether connected to your upscale headphone or speaker, or used as a timbre adjustable PreAmp to connect your digital power amplifier, multimedia speaker or various stereo devices, what a real PreAmp. Of course, if you want to try the timbre style of different tube amplifiers, this product can fully meet your requirement, compatible with E180F, 6688 and other tube models, you may exchange at will. 3. Many music fanciers are concerned about the background noise of vacuum tube headphone amplifier, but this product frees you from this concern, its performance in controlling background noise is extraordinary, the background is quiet after several tests and optimizations of the circuit design, without any current background noise, you will hear the purest, most natural, and most nostalgic sound. As to the testing of the current background noise: as it is known to all, the current background noise comes from two sources, one is the vacuum tube headphone amplifier, the other is the audio source or the audio cable (the audio cable makes it more likely to generate background noise), the correct procedure of testing the headphone amplifier is to disconnect the audio input cable, with power on, if the background of the headphone amplifier is quiet, it indicates that the headphone amplifier has a very high SNR. If unquiet, or this seriously affects you from listening music, it indicates that the headphone amplifier has a very low SNR. 4. Notes: An electronic interference device near the desktop may also affect the SNR. For example, if the vacuum tube power amplifier is placed near a wireless router or device, it may be interfered to some extent. Enclosed by an aluminum shell, miniaturized but exquisite, the front, rear panel is precisely processed by CNC machining center, you will get a terrific handle, the ultra-small volume will not occupy your desktop space too much. More than a multi-functional upscale high-fidelity USB sound card vacuum tube headphone amplifier, it is also a beautiful desktop ornament. All letters on the machine panels are printed using expensive laser carving and will never fade off.Features1. 2 sets of signal inputs (USB-PC and 3.5mm input), 3.5mm input is preferred. 2. 3 sets of stereo signal outputs: 3.5mm / 6.35mm / RCA simultaneous signal outputs, allowing you to connect different device interfaces. 3. USB: PC Supported ASIO sound effect software (ASIO drive to be installed) 4. Input power: >=1100mW (32ohms). 5. Matched headphone impedance: 16ohms-600ohms. 6. Frequency response: 20 kHz - 30kHz. 7. Support sampling rate: 16Bit - 32k Bit, 44.1kHz, 48kHz.Specification: General Model A962 Material Metal Input Impedance 16ohms-600ohms headphone SNR > = 110dB Distortion < 0.005% Frequency Response 20 kHz - 30kHz Size 98*94*29mm Weight 398g Package Include Package Contents 1 x Amplifier 1 x AC Power Adapter Charger 1 x USB Cable Package Weight One Package Weight 0.54kgs / 1.20lb One Package Size 20cm * 18cm * 5.5cm / 7.87inch * 7.09inch * 2.17inch Qty per Carton 20 Carton Weight 10.96kgs / 24.16lb Carton Size 42cm * 38cm * 30cm / 16.54inch * 14.96inch * 11.81inch Loading Container 20GP: 556 cartons * 20 pcs = 11120 pcs40HQ: 1292 cartons * 20 pcs = 25840 pcs

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Features1. Environmental, safe, portable, mini 2. Support 802.11b/g/n Wireless transmission protocol, the transmission rate is 300Mbps. 3. Support general power and high-power modes 4. Professional Intelligent WiFi repeater 5. WiFi intelligent bridge function, Wireless switch wired, wired switch wireless, intelligent switch 6. WiFi intelligent repeater mode, it supports WiFi hot spot scan automatically and WiFi hot spot memory function 7. Support WEB remote firmware upgrade, free to get the latest firmware. 8. Support WEB management, Chinese and English configuration interface 9. Using USB for power, also convenient to use power bank for power 10. Adopt the original creation D/A temperature compensated auto frequency control technology (TAFC), the lasting stability ensure that the WiFi signal is not dropped 11. Original creation VDNS virtual domain configuration technology to solve the user trouble of configuration 12. Support connecting more than 20pcs WiFi terminal at the same time. 13. Support WPA-PSK/WPA2-PSK, 64/128/WEP security mechanism. 14. The good partner of remote monitoring, long range WiFi signal coverage. 15. Input voltage (DC5V-24V), Need not extra power supply, reducing e-waste. 16. The transmission distance (without obstacle): 500mSpecifications1. Transmission protocol: 802.11b/g/n 2. Frequency: 2.4GHz 3. Transmission rate: 300Mbp 4. Working voltage: DC 5V-24V (typical 5V) 5. Dimensions: 94 x 45 x 15mm 6. Weight: 62gSpecification: General Model VAP11G-500 Types Repeater Material ABS Interface USB 2.0, RJ45, DC IN Transmission Rate 300Mbps for WiFi Wireless Security WPA2-PSK WPA-PSK 64/128 Bit WEP WPA2 WPA Antenna Types Built-in Intelligent omnidirectional antenna Standards WiFi IEEE 802.11n WiFi IEEE 802.11g WiFi IEEE 802.11b Size 90*45*15mm Weight 90g Package Weight One Package Weight 0.11kgs / 0.23lb One Package Size 15cm * 10cm * 3cm / 5.91inch * 3.94inch * 1.18inch Qty per Carton 50 Carton Weight 4.25kgs / 9.37lb Carton Size 52cm * 29cm * 21cm / 20.47inch * 11.42inch * 8.27inch Loading Container 20GP: 842 cartons * 50 pcs = 42100 pcs40HQ: 1954 cartons * 50 pcs = 97700 pcs

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1. Add a high-gain antenna to provide better wireless penetration 2. The antenna angle can be flexibly adjusted 3. Support WPA2 and other encryption methods to protect your home network security 4. System support: Windows XP/Vista/7/8/8.1/10 (32-bit, 64-bit), MacOS 10.6/10.11 5. Plug in the wireless network card and launch Wifi for mobile phones/tablets and other terminals 6. Working frequency: 2.412GHz-2.484GHz 7. Wireless standard: support IEEE802.11b/g/n standard 8. Transmission rate: 300Mbps 9. Interface: USB 2.0 10. Antenna: 3dBi 11. Transmitting power: 19dBm 12. Size: 174x19x12.5mmSpecification: Package Weight One Package Weight 0.07kgs / 0.15lb One Package Size 24cm * 10cm * 3cm / 9.45inch * 3.94inch * 1.18inch Qty per Carton 80 Carton Weight 6.70kgs / 14.77lb Carton Size 48cm * 40cm * 30cm / 18.9inch * 15.75inch * 11.81inch Loading Container 20GP: 462 cartons * 80 pcs = 36960 pcs40HQ: 1074 cartons * 80 pcs = 85920 pcs

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SPECIFICATIONSBrand Name: COOLCOLDOrigin: Mainland ChinaHign-concerned Chemical: NoneRadiator Type: Air-cooledSize: 15-inchApplication Laptop Size: 12-17inchUSB Ports: 2Material: Aluminum & PlasticPackage: YesType: Five FansModel Number: F2PLUSCertification: CECertification: FCCCertification: RoHSColor: BlackMaterial: Plastic, MetalProduct Dimensions: 33.3*25*3.6cmProduct Weight: 800gFan Size: 10*10*2cmFan Speed: 1500±10%RPMVoltage: DC5VRated Current: 0.5±10%ARated Power: 2.5±10%WChoice: yes●COOLCOLD laptop cooler is specially designed to cool down up to 15.6 inch laptops. Honeycomb style metal mesh, 1 small fan 4 big fans, flip-up anti-slip pad, 5 adjustable stand height settings, 2 USB ports, adjustable speeds, and USB powered.●The laptop cooling stand is set with a small central fan with two big fans on each side (5 total low noise fans), providing more airflow to keep laptop cool down. At the back of the laptop fan cooling pad, there is a switch wheel that turns fans on and off.●The laptop cooling fan has a metal bar for ergonomic design at the bottom, providing an elevation mechanism, and 5 adjustable stand heights adjustments add more room for laptop and desk, good for laptop heat dissipation and then lowering the temperature.●Compatible with various laptop sizes from 12 up to 15.6 inches, such as Apple MacBook Pro Air, HP, Alienware, Dell, Lenovo, ASUS, etc (USB cable included). The laptop fan can also accurately dissipate heat for your tablet, router, game console.●COOLCOLD provides each customer with a 24-month warranty . If there is any problem with the product you purchased, please feel free to contact us. Package Contents - 1 x Laptop Cooling Stand, 1 x USB cable, 1 x User manual, and lifetime friendly customer service.

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1. Onboard voltage regulation chip, supporting a wide voltage range from 7V to 36V, and supporting PoE Ethernet power supply2. Supports control via MQTT protocol, providing Alibaba Cloud MQTT application routines3. Onboard integrated power isolation, capable of providing stable isolated voltage, and the isolated end does not require additional power supply4. Input features bidirectional optocoupler isolation, supporting passive and active switch input, built-in anti-jitter algorithm, relays support switch input linkage mode or inversion mode control5. Output uses Darlington, with optocoupler isolation, stronger driving capability, with a driving current of up to 500mA, and built-in reverse current diode protection6. Output has flash-on and flash-off functions, can be set with parameters in the instruction, automatically turns off after a certain period of time after the output is turned on7. Rail-mounted enclosure design, convenient installation, safer to use8. External indicator light, convenient for checking input/output status, MCU status and signal transmission/reception status9. Size: about 14.5 x 9 x 4 cmPackaging list:- Modbus POE ETH IO 8CH host unit x 1- Screwdriver x 1Specification: Package Weight One Package Weight 0.22kgs / 0.49lb One Package Size 18cm * 12cm * 6cm / 7.09inch * 4.72inch * 2.36inch Qty per Carton 40 Carton Weight 10.00kgs / 22.05lb Carton Size 50cm * 38cm * 32cm / 19.69inch * 14.96inch * 12.6inch Loading Container 20GP: 438 cartons * 40 pcs = 17520 pcs40HQ: 1018 cartons * 40 pcs = 40720 pcs

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Gateway module features:1. On-board Semtech SX1302/3 baseband processor and SX1250 RF front-end chipset2. On-board PA and LNA, with +26 dBm transmit power and -141 dBm receive sensitivity3. The SX1303 supports fine-grained timestamping, enabling network positioning based on Time Difference of Arrival (TDOA)4. Mini-PCIe form factor with 52-pin header, facilitating integration into various embedded systems5. Four onboard LED indicators for easy monitoring of module operating statusExpansion board features:1. Based on the Raspberry Pi 40-pin GPIO interface, compatible with Raspberry Pi series motherboards2. On-board L76K module supporting GPS and Beidou, providing precise clock and positioning coordinates for the gateway moduleModule specifications1. Baseband chip: SX1302: 868 MHz, 915 MHz; SX1303: 868 MHz, 915 MHz2. Frequency bands: 868 MHz: EU868, IN865, RU864; 915 MHz: US915, AU915, KR9203. Supply voltage: 5V4. Modulation: LoRa/(G)FSK5. Transmit power: +26 dBm at 5V6. Receive sensitivity: -141 dBm at 125 kHz/SF12; -121 dBm at 125 kHz/SF57. Communication interfaces: SPI, I2C8. Form factor: Mini-PCIe9. Operating temperature: -40–85°C10. Total power consumption: SX1302: Transmit: 454mA at 5V; Receive: 42mA at 5V; Sleep: 11mA at 5V; SX1303: Transmit: 427mA at 5V; Receive: 40mA at 5V; Sleep: 8mA at 5V11. Size: about 5.095 x 3 cmPackage contents (Without expansion board):- SX130x module x 1- IPEX-to-SMA adapter (Male-to-Female, about 17 cm) x 1- 868 MHz/915 MHz rubber rod antenna x 1Package contents (With expansion board):- SX130x module x 1- 868 MHz/915 MHz rubber rod antenna x 1- Expansion board x 1- GPS antenna x 1- 2x20-pin header x 1- IPEX-1 (black) dual-ended cable x 1- Screw pack x 1Specification: Package Weight One Package Weight 0.04kgs / 0.10lb One Package Size 10cm * 5cm * 4cm / 3.94inch * 1.97inch * 1.57inch Qty per Carton 252 Carton Weight 12.00kgs / 26.46lb Carton Size 50cm * 37cm * 32cm / 19.69inch * 14.57inch * 12.6inch Loading Container 20GP: 450 cartons * 252 pcs = 113400 pcs40HQ: 1045 cartons * 252 pcs = 263340 pcs

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