1. Using professional audio VU driver IC, not the TA7318 we used before, this IC contains square root dynamic compression circuit, logarithmic output characteristics, to avoid the small signal pointer does not move, when the signal is large, the pointer hits the bottom The phenomenon. 2. The IC has a mute function. The mute function pin will get a low level at the moment of power-on, which can avoid the phenomenon of the pointer hitting the bottom at the moment of power-on. In order to comply with the boot habit, the pointer will swing with a small swing. 3. The circuit uses 6-12VDC power supply, using IC BA6138, it will be very convenient to use. 4. The double-sided circuit board is used to ensure the firmness of the crimping terminal, so that the pads of the terminal may not be loose after multiple wiring. 5. Each drive board has been tested and adjusted by our professional test stand to ensure the consistency of quality. The design and layout of the drive board are beautiful and reasonable, and there is no interference and self-excitation. Each board has been tested and adjusted by our professional test stand. There is no special requirement. We input 1W/8 ohm (2.83V), and use the P-55 meter to do the load test. The pointer swing is 0DB scale. If you have special requirements, you can send a text message to explain. In addition to adjusting the load potentiometer, the swing adjustment can also be considered from the input voltage divider circuit. The brightness of the backlight can be achieved by adjusting the resistance of R9 and R10. With the electrical parameters of the backlight, it can be easily calculated according to Ohm's law. If you want to help, please text us. Crimp terminal: The crimping terminal we choose has a moderate height. The most important thing is that the crimping method is very reasonable, which can firmly compress wires of various sizes. In addition, we use a double-sided board, and the pads of the crimping terminals are relatively firm a
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Feature: 1. Full clear Video: Get professional-grade footage of your cat’s daily adventures with high-resolution clarity 2. Comfortable and Lightweight Design: Your cat won’t even notice it’s there, and you’ll love how easy it is to use 3. Built for Durability: This camera is designed to withstand all your cat’s playful and active movements 4. Perfect Gift for Cat Lovers: Surprise your fellow pet owners with a unique, fun gadget Specification: Display screen:0.96 inches Resolution: 1920x1080P (video) 3760x2128P (photo) Filter lens:None Format: (video) JPG (image) Loop recording:Yes Video frame rate:30 frames Charging voltage:DC-5V Product size:63.8x31x21mm Image scale:4:3 Product weight:22 grams Color:Black/white Material:Plastic Package includes: 1. Mini Camera 2. Camera Case 3. Cat Collar 4. Instruction Manual 5. USB-C Charging Cable 6.1pc TF Card
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information: Features: 1, Function: Forward, backward, left, right, high speed 15km/h, 30m controlling distance. 2, Simulation Design: with cool appearance. 1/16 scale, oversized cockpit, rubber tires, imitating the dual-light design, 9g steering gear, full-scale control. 3.4GHz Remote Control Frequency: 2.4GHz radio system with anti-jamming capability allows us to race at the same time on the same track. 4, This RC truck with super bright LED headlights to ensure unobstructed driving at night. 5, Long Battery Life: The RC car is equipped with a rechargeable battery. Specifications: Brand: For WPL Model: D12 Mini Item name: RC truck Scale: 1/16 Main material: Plastic Maximum speed: 12-15km/h Battery optional: 1 battery version Frequency: 2.4GHz Battery: 3.7V 500mah Engine: 130 Brushed engine Charging time: 120min Working time: 25min Remote control distance: 40meters Maximum loading capacity: 500g Remote controller battery: 2*AA battery (not included) Dimensions: 21*10.5*11.5CM Package includes: 1* RC car 1* Remote controller 1* Battery 1* Charging cable 1* User manual
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Want to test the sound level? Need to know the noise level? Try our digital sound level meter. It's featured with wide measuring range (30-130dB). It's portable and easy to use as a handy instrument for sound quality control in factory, office, home, school and construction site. Features: This Audio DB Meter complies with IEC651 Type 2 and ANSI S1.4 Type 2, with the measuring scope from 30 to 130 dB and automatic shifting function, A and C Frequency Weighting mode selection and High speed(FAST)/Low speed(SLOW) response rate selection. The mini handheld digital sound level reader is compact, lightweight, and easy to use, it is not only extremely wear-resisting, but also elegant. The output of AC and DC analog signal can be connected to frequency analyzer or X-Y axles recorder for statistic analysis of data. Features with backlight feature, it is appropriate for gathering the sound data at night. And auto power off function is provided, high-reliability and well-designed high-efficiency power supply circuit make the battery more durable. Portable and easy to use, suitable for checking, monitoring or controlling the sound level for personal, families, business, studies, industrial, etc. Specifications: Material: ABS plastic Accuracy: 1.5 dB (based on the standard sound source, 94dB @ 1KHz) Frequency Response Range: 31.5Hz~8KHz Dynamic State Range: 50dB Measurement Range: 30~130dBA, 35~130dBC Frequency Weighting Character: A weight and C weight Dynamic Characteristic of Sound Pressure: FAST 125ms, SLOW 1sec Microphone: 6mm capacitor microphone Digital Display: 4-digit, resolution: 0.1 dB, sampling rate: 2 times/sec Dynamic Scale Display: 1 scale equals 2dB or 1dB, sampling frequency 2 times/sec Dynamic Scale Shift: 30~130dB, 30~80dB, 50~100dB, 80~130dB Overload Display: "UNDER" or "OVER" in display screen AC Signal Output: 0.65Vrms for each shift and full scale, the output of impedance around 600ohm DC Signal Output: 10mV/dB, the output of impedance around 100ohm Power Supply: 3 * 1.5V AAA battery (NOT included) Operating Temperature & Humidity: 040 / 32104 (10%80%RH) Storage Temperature & Humidity: -1060 / 14140 (10%70%RH) Item Size: Approx. 215 * 64 * 27mm / 8.46 * 2.52 * 1.07in Item Weight: Approx. 178g / 6.29oz Package Weight: Approx. 336g / 11.87oz Package Size: Approx. 23.3 * 18 * 5.5cm / 9.18 * 7.09 * 2.17in Package List: 1 * Sound Level Meter 1 * User Manual (English)
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Multifunctional intelligent palace warmer belt, warm uterus + stomach + waist + abdomen, gently care for your health, it is a must-have warm artifact for women at home. PI metal heating + far-infrared hot compress, 3 seconds rapid heating, large-scale heating area, continuous constant temperature hot compress, quickly drive away the cold, and effectively relieve menstrual pain. Three-speed temperature adjustment (50°C, 55°C, 60°C), and four-speed vibration intensity adjustment to adapt to the actual needs of different groups of people in different states. Effectively promote blood circulation, promote metabolism, regulate the body in multiple directions, improve backache caused by prolonged sitting, and relieve lumbar pain. Colour:A: pink + gray/B: white + gray Material:ABS+deer velvet fabric Package Contents: 1 x Smart Warm Palace Belt Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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[Premium Acrylic Material]This crack monitoring record is made of high quality acrylic material, which is sturdy and can be used repeatedly. It is waterproof, sunproof, wear-resistant and scratch-resistant. It is easy to install and intuitive to read. [Precision Inst ent]Our crack monitor gauge adopts advanced technology, perfect for horizontal and vertical crack motion on flat surfaces. This precision inst ent can ensure reliable detection and monitoring of changes in crack width or length over time. [Purpose]This Crack monitor gauge is designed to monitor cracks in walls and how they evolve over time. The inst ent consists of a scale plate and an indicator plate, scale plate (with scales in both horizontal and vertical directions), and indicator plate (one or two crossed indicator lines). [Widely Uses]Our crack measure and record inst ent is widely used for observing the opening and closing of cracks and misalignment on the surface of various buildings. It can also monitor the relative displacement between two points in the horizontal and vertical directions. Parts List: 3 Pairs of Crack Monitoring Record 12xScrews 3xMonitors Description: Our crack monitoring record is designed to monitor cracks in walls and how they evolve over time. It is made of acrylic material, which is waterproof and sun-proof. It is reliable to monitor and easy to read. Feature: Waterproof Device: This crack monitoring record is waterproof and easy to install. It can be used for monitoring of changes in crack width or length over time. Reliable to Use: This crack monitor gauge can be used for observing the opening and closing of cracks and misalignment on the surface of various buildings. It is reliable to operate. Specification: Product Name: Crack Monitoring Record Measuring range: -30 - +30 mm Resolution: 1 mm Measurement accuracy: ±1 mm Ruler size: 100x30 mm Purpose: Can be used to mo
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1. The display device is a 4-digit common positive red digital tube. 2. The 8-level gray scale of the digital tube is adjustable. 3. The control interface level can be 5V or 3.3V. 4. Four M2 screw positioning holes for easy installation. 5. Control interface: 4 pins in total (GND, VCC, DIO, CLK), GND is ground VCC is the power supply, DIO is the data input and output pin, and CLK is the clock signal pin. Digital tube: 4-digit 0.36-inch digital tube with common anode and score points, with red letters highlighted. Positioning holes: 4 M2 screw positioning holes with a diameter of 2.2MM, making the module easy to install and position. bit to achieve combination between modules. size: 4.2 x 2.4x 1.2cm Material: plastic colour: Blue Package Contents: 1 x module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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Features: Multi-use temperature & humidity measuring and recording.Widely measuring range, high accuracy and large data memory. Statistics available on LCD screen. No software needed to generate PDF and CSV temperature report. Parameter programmable by configure software.The LCD screen will be off after 10 seconds of inactive. Widely used in all kinds of warehouse management, logistics and cold chain, such as refrigerated containers, refrigerated package, cold storage, laboratory, etc. Specifications: Temperature Scale: ℃ / ℉ Temperature Resolution: 0.1 Temperature Accuracy: ±3%RH; ±0.5℃(-20~40℃), ±1.0℃(others) Temperature Range: -30~60℃; 0~85%RH Capacity: 32, 000 readings Startup Mode: Button or software Interval: Optional(default: 10 mins) Start Delay: Optional(default: 30 mins) Alarm Delay: Optional(default: 10 mins) Alarm Range: Optional(default: Less than2℃ or Greater than8℃, Less than40%RH or Greater than80%RH) Report: Automatic PDF and CSV Time Zone: UTC +0: 00 (default) Power Supply: 1 x 3V 210mAh CR2032 button battery Material: Plastic colour: white Package Contents: 1 x USB Temperature Humidity Recording Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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