Dual Micro USB 3.7v to 5V 2A Mobile Power Bank DIY 18650 Lithium Battery Charger PCB Board Boost Step Up Module Smoke or Propane Detector Module ) Dual Display Monitor voltage ) Dual Display Monitor voltage and current simultaneously Low Noise Output Clean power for sensitive components Compact Size Space efficient for lab and workbench setups USB Interface Easy integration with computers for data logging Frequently Asked Questions Specification Details Product Type WiFi Smart Power Switch with Energy Monitor Brand Sonoff Origin Original Authentic Warranty 7 days on manufacturing defects Shipping 1 5 days from Bengaluru Delivery 7 8 days across India Support 24 7 via Email and WhatsApp WiFi Standard 802 Dual Micro USB 3 7v to 5V 2A Mobile Power Bank DIY 18650 Lithium Battery Charger PCB Board Boost Step Up Module
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