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The design conforms to the head shape of most people in the accident. (Note: the input voltage is lower than 4.5V, the on-board voltmeter does not work and does not display) 2.Large size 5*5 touch the button to switch the measurement input or output voltage, and there is an indicator light to show which terminal voltage is being measured. Perfect for Halloween, cosplay, or just pranking your friends! Parameter Description: ● Ultra-wide input voltage 3V~32V (the boost below 5V works normally, but the digital tube does not work), the working voltage range is 5~32V; ● Ultra-wide boost output voltage 5V~40V; ● Built-in 4A high-efficiency MOSFET switch, making the efficiency up to 94%; (LM2577 current is only 3A) ● The ultra-high switching frequency is 400KHz, which can achieve very good results with small-capacity filter capacitors, with smaller ripple and smaller volume. Press and hold the button for 2 seconds to turn off the digital tube. Halloween Mask for Adults & Klds - Lifelike Horror Costume Accessory for Parties, Carnivals, Role-Play, Haunted Houses & Theme Events - Comfortable with Breathing Holes & Great Visibility XL6019 Boost Module DC-DC 5A Power Module model XL6019 Boost Module Modular nature Non-isolated boost ( BOOST ) Rectification method Asynchronous rectification input range Limit value: 3-40V, recommended value 3V-35V output range Limit value: 5-45V, recommended value 5V-40V (by rotating potentiometer) Input Current Limit value: 0-5A, recommended value 0-3A Conversion efficiency up to 94% On-off level. When the equipment needs 5V-35V power supply and the corresponding voltage power supply is in hand, this module can be used to easily adjust the voltage to the required voltage and solve the problem.be troubled.3.System working voltage test, you can use this module to debug the working voltage range of various voltage test systems when doing projects, which is very easy and convenient. Jason Mask LEKA NEIL Alien Mask Realistic Latex Alien Mask UFO Alien Realistic Alien Face Masks Alien Mask Adult Realistic Full Head Latex Alien Mask For Halloween Trinidad And E 1162429 The higher the voltage, the greater the no-load current. XL6009 LED display Boost Module DC-DC 4A Power Module Advantages of the upgraded version: Using the internal high-precision reference and the voltage divider sampling resistance of one thousandth of low temperature drift, the software does multiple filtering processing to greatly improve the accuracy of the acquisition voltage. 👾 [ Comfortable Fit ] It can fit the face without affecting facial expressions. The set calibration value will take effect immediately and will not be lost after power failure. After letting go, the set value will be saved and the voltage will return to normal display. (LM2577 frequency is only 50KHz)   Model XTW6009 Boost module Module nature Non-isolated boost (BOOST) Rectification method Asynchronous rectification Input range 3V~32V Output range 5V~35V Input Current 4A (large), no-load 18mA (5V input, 8V output, no-load less than 18mA. Breathable Design: This Alien Face Masque adds more joy and an active atmosphere to your events, ensuring there are no obstacles to sight and... This scary halloween mask is sure to be a hit with everyone! Breathable and easy to wear all night long! 👾 [ Alien Funny Mask ] Transform into an extraterrestrial with this realistic and hilariously funny alien mask! Button function description: Each time the button is pressed, the voltage displayed on the digital tube switches between the input and output voltages. Applications: This module can be used in the boost field where the output voltage is higher than the input voltage, such as batteries, power transformers, DIY adjustable regulated power supplies, 24V car notebook power supplies, industrial equipment step-down, 9 to 12V, 12V to 18V, 18V to 24V, etc.