Search results for "school electronics"

1. Measurement range: 30dB - 130dB2. Accuracy: about 1.5dB (based on standard sound source, 94dB@1KHz)3. Resolution: 0.1dB (less than 100dB); 1dB (more than 100dB)4. Frequency response: 31.5Hz - 8.5KHz5. Sampling rate: 2 times / second6. Sensor type: 6mm condenser microphone sensor7. Display mode: LED digital tube, single word 4 inches8. Alarm output: 12V high level9. Alarm prompt: sound + prompt10. Operating environment: 0 - 40 degrees Celsius, within 80% relative humidity, indoor altitude less than 2000m11. Storage environment: -10 - 60 degrees Celsius, within 70% relative humidity12. Input: DC 5V/1A13. Power supply: USB direct plug14. TA654A test cable length: about 5 meters15. Size: approx. 32.3 x 17.3 x 4cm16. Weight: about 980gFeatures:1. Highly sensitive 1/2 inch condenser microphone with high accuracy, high sensitivity and instantaneous response (TA654A external sensor)2. 13-inch large screen display3. Back hidden bracket design, can be placed on the desktop4. A variety of fixed ways, wall hanging / hanging / placed / external bracket5. Upper limit alarm prompt: the upper limit alarm threshold can be set, when the measurement is higher than the set threshold, the buzzer will alarm prompt sound, and the alarm prompt light flashes, the time can be set to: 65-120s6. Back panel design, the top and bottom have 2 ventilation holes, more responsive7. Analog bar level indication8. Alarm signal output interface, the use of 3.5mm two-section or three-section headphone plug 12V alarm horn (not included)Specification: Package Weight One Package Weight 1.40kgs / 3.10lb One Package Size 40cm * 24cm * 9cm / 15.75inch * 9.45inch * 3.54inch Qty per Carton 10 Carton Weight 14.70kgs / 32.41lb Carton Size 47cm * 42cm * 52cm / 18.5inch * 16.54inch * 20.47inch Loading Container 20GP: 259 cartons * 10 pcs = 2590 pcs40HQ: 603 cartons * 10 pcs = 6030 pcs

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1. Powered by the RP2350 microcontroller chip developed by Raspberry Pi2. Features a unique dual-core, dual-architecture design, equipped with dual-core ARM Cortex-M33 processors and dual-core Hazard3 RISC-V processors; operates at clock speeds up to 150MHz and allows flexible switching between the two architectures3. Built-in 520KB SRAM and 16MB on-chip Flash4. Uses a USB Type-C interface for modern convenience—no need to worry about connector orientation5. Onboard 0.85-inch LCD screen with 128 × 128 resolution and 65K colors6. Supports USB 1.1 Host and Device modes7. Supports low-power sleep and dormant modes8. Recognized as a mass storage device via USB for drag-and-drop programming9. Includes 1x I2C, 1x UART, 2x 12-bit ADCs, and 2x controllable PWM channels10. Precise on-chip clock and timers11. Built-in temperature sensor for real-time chip temperature monitoring12. 12 Programmable I/O (PIO) state machines for custom peripheral supportLCD Screen Specifications:1. Operating voltage: 3.3V/5V2. Display size: 15.21 × 15.21 mm3. Resolution: 128 × 128 pixels4. Colors: 65K5. Panel type: IPS6. Pixel pitch: 39.6 × 118.8 μm7. Interface: 4-wire SPI8. Driver IC: ST7735Specification: Package Weight One Package Weight 0.06kgs / 0.13lb One Package Size 8cm * 8cm * 6cm / 3.15inch * 3.15inch * 2.36inch Qty per Carton 144 Carton Weight 9.00kgs / 19.84lb Carton Size 50cm * 38cm * 34cm / 19.69inch * 14.96inch * 13.39inch Loading Container 20GP: 412 cartons * 144 pcs = 59328 pcs40HQ: 958 cartons * 144 pcs = 137952 pcs

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1. Display technology: LCD2. Projection light source: LED module3. The service life of the projection light source: more than 30,000 hours4. Center brightness: 100 ANSI lumens5. Light type: LED6. Physical resolution: 1920*1080 (support 4K film source)7. Projection size: 50-180 inches9. Projection ratio: 1.35:110. Uniformity: greater than 75%11. Projection distance: 1.5 meters-3 meters12. Projection aspect ratio: 16:0913. Focus mode: manual focus14. Keystone correction: automatic keystone correction (horizontal + vertical: +/-40 degrees)15. Projection mode: front projection, rear projection, ceiling projection16. System: Android 917. Solution: RK3229 4-core, A7 core, 1.2G18. Processor: Mali400 MP2 GPU19. Running memory: 2GB20. Built-in storage: 16GB21. WIFI: 2.4G & 5G22. Bluetooth: 4.023. Video format: 4K HEVC, H.265, MPEG-2, MPEG-4, H.264, VP8, VP924. Music format: MPEG1, Layer3, AC3, EAC3, AAC, HEAAC, WMA, LPCM, IMA-ADPCM/MS-ADPCM25. Picture format: jpg, png, bmp, etc.26. Remote control: support infrared and 2.4G wireless remote control27. Built-in speaker: 2X3W28. Optical machine power consumption: 40W29. Standby power consumption: 2.5W30. Power consumption of the whole machine: 65W31. Interface: HDMI X1, USB X1, DC input X132. Size: 11x13.5x15cm33. Net weight: 1.05kg34. Packing list: projector, infrared remote control, power cord, manual35. Built-in battery 2600 mAhSpecification: General Model Y2 GPU Mali400 MP2 RAM 2GB ROM(Flash) 16GB Display Types LCD Native Resolution 1920 x 1080 Aspect Ratio 16:9 Brightness 100 ANSI Light Source Life more than 30,000 hours Lamp Types/Number/Life LED Projector Ratio 1.35:1 Keystone Correction automatic keystone correction (horizontal + vertical: +/-40 degrees) Focusing Manner Manual Focus Projection Methods Front, Rear, Ceiling Projection Distance 1 - 3m Battery 2600 mAh Speaker 2X3W Interfaces(I/O) 1 x USB Port 1 x HDMI Port 1 x DC In Port WiFi 2.4G & 5G Bluetooth 4.0 Media Format Audio AAC, WMA Video H.264, H.265, MPEG2, MPEG4 Picture JPG, PNG, BMP Dimensions Size 11x13.5x15cm Weight 1.05kg Package Include Package Contents 1 x Projector 1 x Remote Control 1 x Manual 1 x Power Cable Package Weight One Package Weight 1.51kgs / 3.33lb One Package Size 21cm * 20cm * 17cm / 8.27inch * 7.87inch * 6.69inch Qty per Carton 8 Carton Weight 13.54kgs / 29.85lb Carton Size 42cm * 42cm * 36cm / 16.54inch * 16.54inch * 14.17inch Loading Container 20GP: 419 cartons * 8 pcs = 3352 pcs40HQ: 974 cartons * 8 pcs = 7792 pcs

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1. Dielectric strength: withstand 750 V (50 Hz AC RMS) for 1 minute, without breaking, flying fox phenomenon 2. Rated power: 2W 3. Small size, easy to carrySpecification: General Material Plastic, Metal Package Weight One Package Weight 0.04kgs / 0.08lb One Package Size 6cm * 3cm * 3cm / 2.36inch * 1.18inch * 1.18inch Qty per Carton 500 Carton Weight 11.00kgs / 24.25lb Carton Size 32cm * 32cm * 30cm / 12.6inch * 12.6inch * 11.81inch Loading Container 20GP: 868 cartons * 500 pcs = 434000 pcs40HQ: 2015 cartons * 500 pcs = 1007500 pcs

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Safety Cautions1. Li-ion and Li-po batteries are quite unstable. They may cause fire, personal injury, or property damage, if they are not properly recharged or used. 2. Do not reversely connect the polarities when recharging or discharging the battery. Do not use inferior charger/charging panel to recharge the battery. 3. Do not mix use old batteries with new ones, avoid using batteries of different brands. 4. When buying lithium battery, should make sure the battery specification is compatible with the expansion board. Choose batteries from formal manufacturer, and ensure the batteries will work stably and safely by aging test. 5. Lithium batteries have limited cycle life, they will also deteriorate as time goes by. Should be replaced with new ones when the batteries reaching their max cycle life, or working over two years, whichever comes first. 6. Should be placed carefully and properly, keep it away from inflammables and explosives articles, away from children, avoid any safety accident caused by careless storage.FeaturesThe Solar Power Manager (C) is compatible with general 6V~24V solar panels. It can recharge the 18650 rechargeable Li-ion batteries through solar panel or USB TYPE-C connection, and provides 5V / 3A regulated output (with multi protocols support including PD/QC/FCP/PE/SFCP). The module features MPPT (MAX Power Point Tracking) function and multi protection circuits, therefore, it is able to keep operating with high-efficiency, stability, and safety. It is suitable for solar powered, low-power IoT, and other environmental protection projects. 1. Support MPPT (MAX Power Point Tracking) function, MAX the efficiency of the solar panel 2. Flexible battery recharging: from solar panel or USB TYPE-C power adapter 3. Compatible with 6V~24V solar panels, DC-002 jack input or screw terminal input 4. Onboard MPPT SET switch, select the level closed to input level to improve recharging efficiency 5. Onboard aluminum electrolytic capacitor and SMD ceramic capacitor, reducing the ripple, stable performance 6. Embedded battery holder, supports 3x 18650 rechargeable Li-ion batteries 7. Several LED indicators, for monitoring the status of solar panel and battery 8. Multi protection circuits: over charge / over discharge / reverse-proof / over heat / over current, stable and safe to useSpecifications1. Solar in: 6V ~ 24V (18V by default) 2. Recharging: Solar panel, power adapter, USB 3. Battery: 3 x 18650 Li-ion battery (Not included) 4. USB input: 5V (Type-C, with PD quick charge support) 5. 5V output: 5V / 3A (USB-out, Type-C) 6. Recharging cutoff voltage: 4.2V +/- 1% 7. Over discharge protection voltage: 3.0V +/- 1% 8. Solar panel recharging effeciency: ~78% 9. USB recharging effeciency: ~93% 10. Batteries boost out effeciency: ~92% 11. Case: Metal case 12. Size: 119.0 x 71.0 x 25.2mm 13. Package list: - Solar Power Manager (C) x1 - Adapter x1Specification: Package Weight One Package Weight 0.24kgs / 0.54lb One Package Size 20cm * 15cm * 5cm / 7.87inch * 5.91inch * 1.97inch Qty per Carton 40 Carton Weight 9.00kgs / 19.84lb Carton Size 42cm * 32cm * 27cm / 16.54inch * 12.6inch * 10.63inch Loading Container 20GP: 734 cartons * 40 pcs = 29360 pcs40HQ: 1705 cartons * 40 pcs = 68200 pcs

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1. Working voltage: 2.6~3.3V2. Test voltage range: 0.1V~250V / 40~1kHz3. Working temperature: 0~40 degrees Celsius4. Working humidity: Relative humidity 20%~75%5. Material temperature: -10~50 degrees Celsius6. Raw material humidity: Relative humidity 20%~80%7. RCD current: more than 30mA8. RCD working voltage: 220+/-20V9. Battery: 2 AAA batteries (not included)10. Size: 64.5x64.5x58.2 (mm)11. Mainly used to detect the plug polarity and the safety of the leakage switch, which can quickly and accurately detect the plug wiring. At the same time, the plug voltage can be tested and displayed on the LED display of the LCD screen.12. Features: VA color display, leakage protection, zero line recognition, automatic shutdown, non-contact detectionSpecification: Package Weight One Package Weight 0.15kgs / 0.34lb One Package Size 12cm * 12cm * 10cm / 4.72inch * 4.72inch * 3.94inch Qty per Carton 40 Carton Weight 7.00kgs / 15.43lb Carton Size 52cm * 50cm * 25cm / 20.47inch * 19.69inch * 9.84inch Loading Container 20GP: 410 cartons * 40 pcs = 16400 pcs40HQ: 952 cartons * 40 pcs = 38080 pcs

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Features1. Mixing console The analog mixing console is combined with a digital sound card, with 6 channels, personalized function settings, and convenient console design, giving you a different tuning experience. 2. Intelligent noise reduction, high-fidelity sound quality, clear and bright vocals. 3. Built-in high-speed ARM chip, with unique low-noise, voice-changing, pitch-changing, reverberation, delay, electronic sound effects and other processing technologies. 4. For wireless Bluetooth connection, switch to Bluetooth mode, turn on the electronic device with Bluetooth function, and search for the connection. 5. Support audio equipment with USB2.0 interface, lossless sound quality playback, all in NA4 analog digital mixer. 6. The flexible LOOPBACK function is perfect for recording and webcasting. The LXR combined microphone input interface is adopted, and the level of the recording state is visible, which is convenient for flexible adjustment at any time.24 types of DSPReverberation: 1. Simulate reverberation in small spaces such as concert halls 2. Simulate the reverberation of the acoustic environment of a small space (auditorium) 3. Simulate the reverberation in large spaces such as theaters 4. Echo of the Valley Electronic synthesis sound effects: 5. Electronic Mix (A flat major) 6. Electronic Mix (A major) 7. Electronic Mix (B-flat major) 8. Electronic Mix (B major) 9. Electronic Mix (C major) 10. Electronic Mix (D-flat major) 11. Electronic Mix (D major) 12. Electronic Mix (E-flat major) 13. Electronic Mix (E major) 14. Electronic Mix (F major) 15. Electronic Mix (G flat major) 16. Electronic Mix (G major) 17. Electronic mixing (semitone scale) Synthetic sound effect with altered voice: 18. Female Voice 19. Uncle Tone Flanger 20. Children Voice 21. Childish Echo 22. Magic Sound (Male) 23. Magic Sound Echo (Male) 24. Original SoundSpecification1. Frequency response: 0.05%dB/-2.0dB (20Hz to 20kHz), refer to the rated output level @1kHz, GAIN knob: medium 2. Total harmonic distortion (THD+N): 0.02%@+10dBu (20Hz to 20kHz), GAIN knob: Medium 3. Noise (20Hz to 20kHz): residual output noise, -85dBu (STEREO OUT, STEREO LEVE), GAIN knob: small 4. Crosstalk (1kHz)*2: -83dB 5. Input/output impedance: Microphone input: 3k Ohm, line input: 10k Ohm Output: 150 Ohm (balanced) 75 Ohm (unbalanced) 6. AES digital signal input and output: 110 Ohm 7. Input channels: MIC*4, 2REC, PC, 2LINE, USB, BT, 3.5MINI 8. Output channel: STEREO OUT: 2, PHONES:1, 3.5MINI MAIN PH OUT:1, 2.GROUP PH:1.3.5MINI LOOP BACK output: 2.REC 9. Bus: Stereo: 1, GROUP:1. 10. Input channel function: HPF(Mono)80Hz,12dB/octave (CH3,4) EQ HIGH Gain: +15dB/-15dB frequency: 10kHz ramp frequency: EQ LOW Gain: +15dB/-15dB Frequency: 100kHz Ramp frequency: PEAK LED When the signal after EQ reaches 11. 3dB below the distortion, the LED lights up LED indication: MAIN STEREO LEVEL knob, the green light is on when the MAIN LEVEL signal reaches -10dB, and the red light is on when the signal reaches 3dB below the distortion 12. Input and output level: MIC (-60dB) LINE OUTPUT (-40dB) MAX OUT (+12dB) 13. USB audio: 2IN/2OUT USB audio 2.0 compatible, decoding rate: 48.1kHz, Bit depth: 24-bit 14. Effect category: independent volume adjustment effect: true digital effect processing 15. Phantom power supply voltage: support large diaphragm condenser microphone 16. Voltage adapter: DC 5V/2.0A standardSpecification: Package Weight One Package Weight 1.17kgs / 2.57lb One Package Size 28cm * 26cm * 9cm / 11.02inch * 10.24inch * 3.54inch Qty per Carton 10 Carton Weight 13.05kgs / 28.77lb Carton Size 48cm * 42cm * 38cm / 18.9inch * 16.54inch * 14.96inch Loading Container 20GP: 348 cartons * 10 pcs = 3480 pcs40HQ: 808 cartons * 10 pcs = 8080 pcs

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1. Power supply: 9-24V2. Communication interface: RS485 port x 1, Ethernet port x 13. Baud rate: 300-115200 bps4. Data bits: 5-9 bits5. Configuration: host, web browser, device management function library6. Communication method: TCP/IP direct communication, VCOM7. Working temperature: -40 degrees to 85 degrees8. Main function: Bidirectional transparent data transmission between RS485 and Ethernet9. It is easy to combine multi-rail installed serial servers together, more freedom.10. It is suitable for Modbus grid upgrade and can be used in conjunction with 3D configuration software.11. Support TCP server / TCP client / UDP mode / UDP multicast.12. Multi-host rolling polling support, easy for cloud communication and device identification.Specification: Package Weight One Package Weight 0.14kgs / 0.30lb One Package Size 12cm * 8cm * 6cm / 4.72inch * 3.15inch * 2.36inch Qty per Carton 100 Carton Weight 16.00kgs / 35.27lb Carton Size 50cm * 42cm * 32cm / 19.69inch * 16.54inch * 12.6inch Loading Container 20GP: 396 cartons * 100 pcs = 39600 pcs40HQ: 921 cartons * 100 pcs = 92100 pcs

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1. Full angle display2. Overload alarm3. Power threshold setting4. Reset the battery5. Save after power off6. Measure voltage, current, power, electricity7. Set button, backlight button8. Dimensions: 67x57.5mm9. Unit weight: 0.12kg10. Measuring range: 80-26011. Power supply voltage: 260 (V)Specification: Package Weight One Package Weight 0.15kgs / 0.34lb One Package Size 15cm * 12cm * 5cm / 5.91inch * 4.72inch * 1.97inch Qty per Carton 194 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 194 pcs = 34338 pcs40HQ: 412 cartons * 194 pcs = 79928 pcs

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1. Material: electronic components2. Gain: 2.0dBi3. Frequency range: 1060-1120 MHz4. The antenna can be fixed on a conductive object connected to the ground, which can reduce electrostatic coupling interference5. Size: 17.9 x 2cm6. Weight: about 15 gramsSpecification: Package Weight One Package Weight 0.03kgs / 0.06lb One Package Size 20cm * 4cm * 2cm / 7.87inch * 1.57inch * 0.79inch Qty per Carton 500 Carton Weight 14.00kgs / 30.86lb Carton Size 30cm * 50cm * 46.7cm / 11.81inch * 19.69inch * 18.39inch Loading Container 20GP: 380 cartons * 500 pcs = 190000 pcs40HQ: 883 cartons * 500 pcs = 441500 pcs

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1. Output Terminal: Stereo earphone, RV power source. 2. Menu Lanuguage: As per customers requirement ,different languages for choice. 3. Input Voltage:12V-2A. 4. Small size , easy to carry. 5. A good HD home theater for your famliy members. 6. Built-in 1300mAh lithium battery.Specification: General Model YG320 Material Plastic Display Types LCD Native Resolution 320 x 240 Aspect Ratio 16:9, 4:3 Brightness 400 lumens Lamp Types/Number/Life LED Contrast Ratio 300:1 Focusing Manner Manual Focus Projection Methods Front, Rear Image Size 20 - 80 inch Power Consumption 24W Interfaces(I/O) 1 x USB Port 1 x HDMI Port 1 x SD Card Slot 1 x Earphone Out Port 1 x AV/Video Package Weight One Package Weight 0.66kgs / 1.46lb One Package Size 19.7cm * 18.3cm * 8.4cm / 7.76inch * 7.2inch * 3.31inch Qty per Carton 20 Carton Weight 14.00kgs / 30.86lb Carton Size 45cm * 42cm * 40cm / 17.72inch * 16.54inch * 15.75inch Loading Container 20GP: 352 cartons * 20 pcs = 7040 pcs40HQ: 818 cartons * 20 pcs = 16360 pcs

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1. Copy board features: ultra-thin and light, high light uniformity, led green energy saving light source without stroboscopic phenomenon belongs to the source of healthy eye care. 2. It is equipped with high quality stabilized voltage power supply and separate wire-controlled power switch, which is very convenient to use. 3. Use range of copy board: it is the most widely used tool in animation and cartoon at present, and it is a necessary tool.Other majors: interior, architecture, fashion design and drawing, etc. 4. Power: 5W. 5. Output Voltage: USB 5V, input: AC100-240V.Specification: Package Weight One Package Weight 0.49kgs / 1.08lb One Package Size 40cm * 29.5cm * 3.5cm / 15.75inch * 11.61inch * 1.38inch Qty per Carton 20 Carton Weight 10.20kgs / 22.49lb Carton Size 62cm * 42cm * 38cm / 24.41inch * 16.54inch * 14.96inch Loading Container 20GP: 269 cartons * 20 pcs = 5380 pcs40HQ: 625 cartons * 20 pcs = 12500 pcs

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