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About The ProtuctThis is an industrial expansion module based on Raspberry Pi CM4, which features common interfaces such as Gigabit Ethernet, HDMI, USB, and GPIO, allows additional 4G / 5G / LoRa wireless communication modules to be connected via the M.2 or Mini-PCIe socket. There are also industrial interfaces/resources including RS485, CAN, and RTC. Combined with the industrial rail-mount protection case, the module is an ideal choice for building IoT gateway, 4G/5G router, IoT data acquisition, or even the PLC device in industrial automatic control system, and more.Specifications1. CM4 socket: For all variants of Compute Module 4 2. Networking: - Gigabit Ethernet RJ45 - M.2 B KEY / Mini-PCIe (via adapter), for connecting 5G / 4G / LoRa wireless module - Nano-SIM card slot, support standard Nano-SIM card for 5G/4G/3G/2G communication 3. USB: USB 2.0 x 3 4. PIN header: Non-isolated RS485 x 2, non-isolated CAN x 1, some GPIO pins 5. Camera: MIPI CSI-2 x 1 (15pin 1.0mm FPC connector) 6. Video: HDMI x 1, support 4K 30fps output 7. RTC: Real-time clock with battery socket and ability to wake Compute Module 4 8. Storage: MicroSD card socket for Compute Module 4 Lite (without eMMC) variants 9. Fan header: 5V/12V, allows speed adjustment and measurement 10. Power input: 5V or 7~36V 11. Dimensions: 145 x 90 x 40mmPackage List1. CM4-IO-WIRELESS-BASE x 1 2. PCIe to 4G/LoRa adapter x 1 3. Screwdriver x 1 4. Screws pack x 1 5. 12V 2A power adapter x 1Specification: Package Weight One Package Weight 0.38kgs / 0.83lb One Package Size 16cm * 12cm * 5cm / 6.3inch * 4.72inch * 1.97inch Qty per Carton 40 Carton Weight 15.50kgs / 34.17lb Carton Size 50cm * 32cm * 27cm / 19.69inch * 12.6inch * 10.63inch Loading Container 20GP: 617 cartons * 40 pcs = 24680 pcs40HQ: 1432 cartons * 40 pcs = 57280 pcs

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1. Module parameters:- Power supply voltage: DC4.5-6V (micro USB interface)- Working current: no more than 70mA- Discharge voltage: 1.00V-15.00V Resolution 0.01V- End voltage range: 0.5-11.0V- Support through current: no more than 3.000A resolution 0.001A- Voltage measurement error: less than 1% + 0.02V- Current measurement error: less than 1.2% +-0.002A- Battery capacity range: 9999Ah (1Ah = 1000mAh) 2.2. When the value is large, it is switched by decimal point shift. When it is less than 10Ah, it will be displayed as X.XXX, when it reaches more than 10Ah, it will be displayed as XX.XX, and so on.3. Circuit board size: 50mmX37mm4. Finished product size: 50mmX37mmX17mm (Length X Width X Height, including copper foot height)5. Weight of board and accessories: single board 28g (including copper pillar), two 5W ceramic resistors 9g, 50W resistor about 27g (including wire)6. Note: In order to improve the voltage measurement accuracy, this circuit is specially designed with DC bias. When the terminal is connected nothing, a small voltage will be displayed, which does not affect the actual measurement. 0V) will display 0. If you want to understand the principle, you can check the superposition theorem in electrical engineering.7. How to use:- The battery under test should be fully charged first.- Connect the positive pole of the battery under test to the input positive pole, and the negative pole to the negative pole of the input. Connect the load to the output positive pole and the output negative pole, and connect the tester micro USB with working power (not available for desktop or notebook USB power supply). The battery voltage is displayed at this time.- To start the test directly, just press the “OK” button, the tester can automatically formulate a suitable termination voltage according to the full charge voltage of the battery, and will flash the display 3 times to start the test. Need to manually set the termination voltage, just press the "+" or "-" button to modify in the battery voltage display state, the termination voltage is displayed at the beginning of P, the back represents the voltage value, the resolution is 0.1V, after setting, press "OK" "start testing.- After the test starts, the tester will turn on the electronic switch that controls the load. The test process data display will be displayed between the discharge capacity (Ah), the current discharge current (A) and the battery voltage (V). When the battery voltage reaches the set termination voltage, the tester cuts off the load control switch, the display data stays above the capacity (Ah) and flashes quickly with the corresponding indicator light, the displayed capacity is the actual discharge capacity of the battery, press it "OK" can stop the flashing and let the data display stably. Press the "OK" button again to restore to the state of just powering up and replace the battery to test the next section ...8. Error code and meaning:- Err1: The battery voltage is higher than 15V- Err2: The battery voltage is lower than the set termination voltage- Err3: The battery cannot bear the load discharge current or the line internal resistance is too large- Err4: Current is too large (current exceeds 3.1A)- Err5: Improper use or wiring error has caused the device to burn down and cannot be used (current sampling or control switch MOS burned)9. Note: If the battery is reversed, when the load is turned on and the load current is large (about> 0.8A), the circuit switch tube may be damaged!10. Secondary calibration operation: Press and hold three buttons to power on the tester at the same time, enter the calibration mode, first display the number of calibration records, then enter the formal calibration sampling program to display 0u0A, then short-circuit the input positive and negative poles and press "OK "Button to complete displaying J10u, apply a standard DC voltage of 10.00V between the input positive and negative electrodes, press the" OK "button, and then display J2.0A, apply to the output negative electrode (inflow direction) and input negative electrode (outflow direction) After a constant DC current of 2.0A, press the "OK" button once to complete the calibration. The tester will pre-check the calibration data. If the calibration data is reliable, it will display 4 calibration numbers in turn and then exit. If the pre-audit believes that the data is not reliable, discard the data and exit.Specification: Package Weight One Package Weight 0.05kgs / 0.11lb One Package Size 12cm * 10cm * 5cm / 4.72inch * 3.94inch * 1.97inch Qty per Carton 500 Carton Weight 23.00kgs / 50.71lb Carton Size 50cm * 50cm * 46cm / 19.69inch * 19.69inch * 18.11inch Loading Container 20GP: 231 cartons * 500 pcs = 115500 pcs40HQ: 538 cartons * 500 pcs = 269000 pcs

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Specification:1. Model: TBK-2182. Voltage: AC110V/220V3. Fuse: 3A (220V AC)4. Output voltage: DC 0~30V5. Maximum output current: 10A6. Maximum instantaneous current: 11A(1 second)7. Maximum output power: 380W8. Current display accuracy: +-1mA9. Voltage adjustment step: 0.1V10. Product size: 21.5 x 12.2 x 16.6cm11. Net weight: 5.2kg12. Package includes:1 x Power Supply1 x Power CableFeatures:1. 300W Ring Transformer: Adopt a military-grade toroidal transformer, improve output efficiency, support long-term full-load operation without heating2. 30V/10A High Frequency Output: Provides efficient and reliable power solutions for your electronic devices3. Current and Voltage Hyperbola Display: Helps you better understand the changes in current and voltage in the circuit4. 4.3-inch HD IPS LCD screen: Quick response to high refresh screen current and voltage curve, accurate data5. Three-range switching: Extra-large mechanical meter head, high sensitivity pointerSpecification: Package Weight One Package Weight 8.00kgs / 17.65lb One Package Size 29cm * 25cm * 22cm / 11.42inch * 9.84inch * 8.66inch Qty per Carton 2 Carton Weight 16.00kgs / 35.27lb Carton Size 31cm * 27cm * 46cm / 12.2inch * 10.63inch * 18.11inch Loading Container 20GP: 692 cartons * 2 pcs = 1384 pcs40HQ: 1607 cartons * 2 pcs = 3214 pcs

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1. Material: plastic, electronic components2. Applicable scenarios: broadcasting, interview recording, speech, online teaching3. Frequency response: 50Hz-20KHz4. Dynamic range: 117dB5. Signal to noise ratio: 75dB6. Audio cable length: 8 meters / 26.2 feet7. Output connector: 3.5mm class 4 metal plug8. Battery: LR44 button battery x 1 (delivery with battery)9. The microphone has an automatic identification function, which can automatically identify the 3.5mmTRRS and 3.5mmTRS input ports10. Contains cotton windscreen to reduce background noise11. Upgrade the noise processing circuit to provide complete and clear sound when recording12. Support 360-degree omnidirectional pickupSpecification: Package Weight One Package Weight 0.15kgs / 0.32lb One Package Size 14cm * 8cm * 2.5cm / 5.51inch * 3.15inch * 0.98inch Qty per Carton 98 Carton Weight 14.01kgs / 30.90lb Carton Size 30cm * 50cm * 46.7cm / 11.81inch * 19.69inch * 18.39inch Loading Container 20GP: 380 cartons * 98 pcs = 37240 pcs40HQ: 883 cartons * 98 pcs = 86534 pcs

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1. Integrating modern DSP technology with traditional pointer tuning structures, it employs software-defined radio principles to demodulate broadcast signals, enhancing listening sensitivity, selectivity, signal-to-noise ratio, and interference resistance2. Receives FM (64-108MHz), AM (522-1620kHz), and SW (3.2-22.0MHz) radio broadcasts4. Large-diameter speaker delivers clear, rich sound5. Treble/bass control switches adjust audio quality for different program types6. Convenient shoulder strap design for easy portability7. Features external power jack and headphone jack8. Power supply: 3 AA batteries (not included)9. Size: about 20 x 12 x 4cmSpecification: Package Weight One Package Weight 0.52kgs / 1.16lb One Package Size 23cm * 13cm * 6cm / 9.06inch * 5.12inch * 2.36inch Qty per Carton 24 Carton Weight 13.40kgs / 29.54lb Carton Size 48cm * 38cm * 28cm / 18.9inch * 14.96inch * 11.02inch Loading Container 20GP: 522 cartons * 24 pcs = 12528 pcs40HQ: 1212 cartons * 24 pcs = 29088 pcs

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1. Stall torque: 30kg.cm @ 12V2. Rotation angle: 360 degrees (0 ~ 4095)3. Position sensor resolution: 360 degrees / 40964. Mechanical limit angle: unlimited5. Operating voltage: 6V ~ 12.6V6. Gear type: high-precision metal gears7. No-load speed: 0.222 sec / 60 degrees (45 RPM) @ 12V 0.192 sec /8. Encoder type: 360-degree magnetic encoder9. ID range: 0 ~ 25310. Baud rate: 38400bps ~ 1Mbps (default 1Mbps)11. Feedback: position, Load, Speed, and12. Input voltage13. No-load current: 180mA14. Stall current: 2.7A15. Kt constant: 11kg.cm/A16. The servo can provide various feedback information: position, speed, torque lock, operating mode (servo mode, servo motor mode, etc.), suitable for advanced projects requiring closed-loop automatic control.17. Can be used to build quadruped, hexapod, robotic arm, and other robot projects requiring multiple servos (this product provides the open-source structural model of the robot dog shown in the figure below).18. Controlled via serial bus, allowing up to 253 servos to be connected in series simultaneously.19. Uses a 12-bit high-precision magnetic encoder angle sensor. Compared to potentiometers, the angle is increased to 360 degrees, and the resolution is increased by 4 times. Due to the gap between the magnetic encoder element and the radial magnet, there is no friction, effectively extending the servo's lifespan.20. Acceleration start/stop function: speed and acceleration values ??can be set for smoother motion.21. The shell uses a higher-strength engineering plastic shell and a dual-axis low-profile shell structure design, optimizing the distance between the planes where the dual-axis servo discs are located, making the overall structure more compact and the product appearance more aesthetically pleasing.22. The servo motor can provide real-time feedback on position, load, speed, and input voltage, allowing for constant monitoring.23. We have open-sourced the web-based control example for the servo motor driver board and provided a secondary development tutorial, which can be directly used for remote setting and control of the servo motor. We also provide 3D models for quick project development.Specification: Package Weight One Package Weight 0.12kgs / 0.27lb One Package Size 8cm * 8cm * 5cm / 3.15inch * 3.15inch * 1.97inch Qty per Carton 144 Carton Weight 18.40kgs / 40.56lb Carton Size 50cm * 34cm * 32cm / 19.69inch * 13.39inch * 12.6inch Loading Container 20GP: 490 cartons * 144 pcs = 70560 pcs40HQ: 1137 cartons * 144 pcs = 163728 pcs

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1. Support I2C protocol2. With backlight power control, you can set whether to connect the backlight power through the jumper cap. Plug in the jumper cap to connect the backlight power, unplug the jumper cap to disconnect the backlight power3. The contrast can be adjusted. Rotate the blue potentiometer to increase clockwise and decrease counterclockwise. The potentiometer is designed on the front, which is convenient for customers to adjust freely anytime and anywhere4. Modules can be cascaded, up to 8 can be cascaded. Modify the device address by shorting A0/A1/A2. The default address is 0x275. Weight: 5g6. Size: 41.5x19x15.3mm8. Power supply voltage: 2.5-6v9. Note: LCD screen is not included10. Delivery list: one IC module (pearl cotton + anti-static packagingSpecification: Package Weight One Package Weight 0.05kgs / 0.12lb One Package Size 15cm * 8cm * 2cm / 5.91inch * 3.15inch * 0.79inch Qty per Carton 200 Carton Weight 11.00kgs / 24.25lb Carton Size 42cm * 42cm * 32cm / 16.54inch * 16.54inch * 12.6inch Loading Container 20GP: 472 cartons * 200 pcs = 94400 pcs40HQ: 1096 cartons * 200 pcs = 219200 pcs

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1. Screen size: 1.1 inches 2. Memory card type: TF card 3. Expansion card: support 4. Interface: USB 2.0 5. Headphone jack: 3.5mm 6. Audio format: MP3 7. Battery capacity: 90mAh 8. Charging time: 40 minutesSpecification: Package Weight One Package Weight 0.06kgs / 0.13lb One Package Size 6.5cm * 5.5cm * 4.5cm / 2.56inch * 2.17inch * 1.77inch Qty per Carton 200 Carton Weight 12.20kgs / 26.90lb Carton Size 47cm * 30cm * 28cm / 18.5inch * 11.81inch * 11.02inch Loading Container 20GP: 675 cartons * 200 pcs = 135000 pcs40HQ: 1568 cartons * 200 pcs = 313600 pcs

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1. Scope of application: industrial testing, circuit board testing, knitwear testing, student teaching, etc.2. Eyepiece magnification: 6003. Objective lens magnification: 6004. Instrument magnification: 600 times5. Resolution: 1080P, 720P, VGA6. Display: 4.3-inch high-definition OLED display7. Built-in battery: 2000mAh lithium battery8. Charging time: 4 hours9. Battery life: about 6 hoursSpecification: Package Weight One Package Weight 0.77kgs / 1.71lb One Package Size 21cm * 17cm * 8.5cm / 8.27inch * 6.69inch * 3.35inch Qty per Carton 38 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 38 pcs = 6726 pcs40HQ: 412 cartons * 38 pcs = 15656 pcs

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Product presentation:1. Support power is 200 watts: 1 and 2 power amplifiers with 1 pair of speaker selector switches, ideal for home theater sound systems, power of 200 watts per channel, suitable for 4–16-ohm impedance speakers, with a compact thin desktop design, compatible with any home theater setting.2. AMPC Amplifier Control: The two-channel speaker switcher controls the stereo connection between two amplifiers and a set of speakers, or the combination connection switch selection, input/output through the screw-type connector terminals, which accept 14AWG speaker wire.3. Independent audio control: With independent audio source channel volume control. The button design allows you to individually select each amplifier to customize your home listening experience, and the volume switch controls the volume adjustment of the output speakers.4. Simple installation: The enjoyment of quality audio performance requires connecting the left and right channel outputs of the amplifier to the left/right and 1/2 amplifier inputs with 1 on 2 speakers on a mini dual channel controller.5. Overload protection: Equipped with a front panel control switch consisting of volume control knob and amplifier switch.Provide high quality audio and overload safety protection circuits and long-term reliability.Product Parameter：1. 2 input 1 output amplifier speaker selector switcher2. Convenient audio control accommodates 2 amplifiers with 1 pair of speakers.3. Home theater stereo amplifier system support, independent audio source channel volume control4. Input/output: screw type connector terminal, compact desktop/desktop mini design5. Front panel button control center, the product needs no power supplyBuilt-in electronic overload protection circuit6. Power processing: 200 watts per audio/speaker channel7. Speaker selector type: 2 soundtracks8. Speaker cable support: 14 wire gauge (14 AWG)9. Support impedance: 4-16 ohms10. Frequency response: 20Hz-20kHz11. Net Weight: 1.06 kg12. Packed weight: 1.21 kg13. Product size: Length 160mm x Width103mm x Height 55mm14. Package size: Length 260mm x Width 185mm x Height 65mm15. Kit list: 2 input 1 output amplifier speaker switcher output with volume adjustment function x 1Specification: Package Weight One Package Weight 1.25kgs / 2.75lb One Package Size 26cm * 18.5cm * 6.5cm / 10.24inch * 7.28inch * 2.56inch Qty per Carton 24 Carton Weight 30.00kgs / 66.14lb Carton Size 76cm * 54cm * 19cm / 29.92inch * 21.26inch * 7.48inch Loading Container 20GP: 341 cartons * 24 pcs = 8184 pcs40HQ: 793 cartons * 24 pcs = 19032 pcs

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1. Working frequency: FRS2. Output power: less than or equal to 2W3. Channel: 224. FM type: FM (F3E)5. Antenna gain: 1.8dBi6. Bandwidth: 12.5KHz7. Power supply: DC3.7V8. Thin shape, ergonomic design, relieve fatigue caused by long-term use9. Functions: timeout timer, power saving, low battery warning, QT and DQT, VOX, channel lock, busy channel lock, signal reminder, channel display, battery status, etc.10. Size: 136x56x21mmTransmitter:1. Deviation: less than or equal to +/-5KHz2. Residual radiation: less than 60Db3. Current: less than or equal to 1000mAReceiver:1. Intermodulation: 50dB2. Audio power: greater than or equal to 300Mw3. Current: less than or equal to 100mA4. Squelch current: 20mASpecification: Package Weight One Package Weight 0.42kgs / 0.92lb One Package Size 22cm * 17cm * 5cm / 8.66inch * 6.69inch * 1.97inch Qty per Carton 20 Carton Weight 9.80kgs / 21.61lb Carton Size 22cm * 34cm * 50cm / 8.66inch * 13.39inch * 19.69inch Loading Container 20GP: 713 cartons * 20 pcs = 14260 pcs40HQ: 1655 cartons * 20 pcs = 33100 pcs

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Features1. CPU: RK3528 Quad-Core 64bit Cortex-A53 2. GPU: Mali 450 MP2 3. FLASH: EMMC 32GB 4. SDRAM: 4GB 5. USB: 1 Type-A USB3.0,1 Type-A USB2.0 6. LAN: Ethernet:10/100M standard RJ-45 7. Bluetooth: V5.0 8. Wireless: 2.4G /5G dual-band Wifi 802.11 a/b/g/n/ac/ax 9. Card reader: Micro SD cards, support up to 64GB(not included) 10. DisplayPort: HDMI 11. HDMI: HDMI 2.0b for 4k at 60Hz 12. Power Indicator (LED): Standby: Red 13. Remote: IR 14. Power Supply: Input 100-240V 50/60HZ, Output: DC 5V/2A 15. AV: Support 16. Operating temperature: -10 degree C to 45 degree C 17. OS: Android 13.0 18. Support Decoder format: - H.264/H.265/VP9 up to 8K 30fps - H.264/AVC BP/MP/HP profile at level 5.1; - H.264/AVC MVC; - Up to 4Kx2K at 60fps H.265/HEVC Main/Main10 profile at level 5.1 High-tier; - Up to 4Kx2K at 60fps VP9 P2 4KX2K at 60fps AVS2 4KX2K at 60fps - MPEG-1, Main profile, up to 1080P at 60fps - MPEG-2, SP at ML, MP atHL, up to 1080P at 60fps - MPEG-4, ASP profile at level 5, up to 1080P at 60fps 19. Support Media format: Avi, Ts, Vob, Mkv, Mov, ISO, wmv, asf, flv, dat, mpg, mpeg 20. Support Music formatt: MP3, WMA, AAC, WAV, OGG, DDP, HD, FLAC, APE 21. Support Photo format: HD JPEG, BMP, GIF, PNG, TIFF 22. HDD file system: FAT16, FAT32, NTFS 23. Support Subtitle: SRT, SMI, SUB, SSA, IDX+USB 24. High Definition video output: 4K (3840x2160 pixel) 25. OSD type of languages: English, French, German, Spanish, Italian, etc multilateral languages 26. Mouse/ Keyboard: Support mouse and keyboard via USB; Support 2.4GHz wireless mouse and keyboard via 2.4GHz USB dongle 27. Network Function: KODI 18.1, Neflix, Vudu, Skype chatting,Picasa, Flicker, Youtube, Facebook, Online movies,etc 28. Other feature: Free Internet searching, thousands of android applications, many kinds of games, etc.Package List1. TV Box x 1 2. HDMI Cable x 1 3. Power Adapter x 1 4. IR Remote x 1 5. User Manual x 1 6. Package Box x 1Specification: Package Weight One Package Weight 0.35kgs / 0.77lb One Package Size 19cm * 12cm * 6cm / 7.48inch * 4.72inch * 2.36inch Qty per Carton 30 Carton Weight 11.50kgs / 25.35lb Carton Size 40cm * 40cm * 35cm / 15.75inch * 15.75inch * 13.78inch Loading Container 20GP: 476 cartons * 30 pcs = 14280 pcs40HQ: 1105 cartons * 30 pcs = 33150 pcs

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