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UPS with automatic voltage regulation?

Home battery backup systems?

UPS vs power bank differences?

How long do backups last?

3S 12.6V 100A Li ion Lithium Battery PCB Protection Board 3 Cells 11.1V Polymer Balance Function Charge Module BMS Circuit Protection PCB Board

$18^.76

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AJMRTC MAX17043 LiPo Fuel Gauge Module, 1S Lithium Battery SOC Voltage Detector Sensor, I2C A/D Converter with Programmable Low Power Alarm for Arduino ESP32 DIY Project

$23^.94

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AJMRTC MAX17043 LiPo Fuel Gauge Lithium Battery Detection Board Module, A/D Conversion IIC I2C Interface Battery Capacity Monitor Module, for Lithium Battery DIY Electronic Projects

$14^.10

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INA226 Bi-directional Current and Power Monitoring Module I2C IIC Voltage Sensor Board High Precision Electrical Measurement Meter for Battery Monitoring and Power Supply Testing

$11^.89

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AJMRTC INA219 I2C IIC Bi-Directional DC Current Voltage Power Sensor Module, High Precision Current Power Monitoring Breakout Board, 0-26V for Arduino, ESP32, Raspberry Pi, Battery Power Measurement

$15^.96

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Outdoor Temperature & Humidity Sensor, YS8005 | Temp/Humidity App Alerts, Up to 2-Year Battery, Works with Alexa/IFTTT, LoRa Protocol Up to 2034 Feet, Hub Required

$64^.99

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7S 29.4V 15A 18650 Li ion Lithium Battery Protection Board Module BMS PCB Board with Balanced Heat Sink for Li-ion Lithium Battery Cell

$15^.50

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AJMRTC 2Pcs INA219 I2C Bi-Directional DC Current Power Supply Sensor Breakout Module, High Precision Voltage Current Power Monitor Sensor Board for Arduino, Raspberry Pi, DIY Battery Power Detection

$20^.23

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AJMRTC 10PCS BYD BM3451TNDC-T28A BM3451 SOP-28 IC Chip, 3-5 Cells Lithium Battery Protection Integrated Circuit with Cell Balancing for BMS, Power Tool and UPS Electronic Projects

$10^.58

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3pcs XL4015 5A DC-DC Step Down Charger Modules, CC CV Lithium Battery Charging Board, LED Power Converter

$16^.71

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ZK-4KX DC-DC Buck Boost Converter Regulator CNC Adjustable CC CV 0.5-30V Voltage Converter DIY Solar Battery Charging Power Supply Module LCD Display with Shell

$18^.23

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AJMRTC INA231 Current & Power Sensor Module, 1Pcs, 1.8V I2C IIC Interface, High Precision Voltage Current Power Monitoring Board for Single Board Computer, Battery Detection & Electronic DIY Projects

$10^.54

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AJMRTC 12V 4-Segment Power Indicator Module, Onboard 4-LED Power Level Display Board, 4-Position Voltage LED Indicator Module for Battery Voltage Monitoring, Power Supply Status Detection, Electronic

$11^.26

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5Pcs KA2284 Level Indicator Module 5 LED Battery Indicator Power Audio Level Indicator Module Board KA2284 3.5V-12V Power Indicator Board

$16^.73

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2PCS 2 Channel Automatic Power Switching Module Automatic Emergency Power Supply Module Switch Dual Power Supply Module AC 90-240V 10A Backup Battery Switch Controller Module

$15^.33

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4x GM Chevy GMC Buick Genuine 13586335 TPMS Tire Pressure Monitoring Sensor

$34^.99

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X3 Temperature & Humidity Sensor, YS8006 | Refresh Temp/Humidity in the App, Works with Alexa/IFTTT/Home Assistant, LoRa Protocol Up to 2034 Feet, Hub Required

$68^.99

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4-Pack WiFi Temperature Humidity Sensor: Wireless Temperature Humidity Monitor with App Alert, Free Data Storage Export, Smart Indoor Thermometer Hygrometer Compatible with Alexa Google Assistant

$62^.99

$63.99

More options from $62.99 - $66.98

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Laser Infrared Thermometer Non-Contact Digital Temperature Gun, -581112(-50600) IR Thermometer for Industrial, Kitchen Cooking, Automotive, HVAC (Not for Human Body Temp)

$25^.99

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1WR3 42mA-1W DC-DC DC 1500VDC Isolation Power Module 2Pcs with Sustainable Short-Circuit Protection (B0512S-1WR3)

$15^.06

More options from $15.06 - $17.81

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Replacement Wired Infrared IR Ray Motion Sensor Bar Compatible Nintendo Wii and Wii U Console (Silver/Black)

$22^.99

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AJMRTC 3Pcs AP3216 ALS PS Module, Digital Ambient Light & Proximity Distance Sensor, I2C Interface for Light Intensity Detection and Object Sensing

$20^.52

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4 in 1 Wii Replacement Cables Set, Wii AC Power Adapter + Wii to hdmi Converter+ Wired Motion Sensor Bar and Composite Audio Video Cable for Nintendo Wii

$43^.99

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5Pcs HC-SR04 Ultrasonic Sensor Module Kit Distance Sensor Compatible with Mega R3 Duemilanove Nano for Robot XBee ZigBee by ElecRight

$15^.18

More options from $15.17 - $16.51

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Soil Moisture Meter,Plant Hygrometer Moisture Sensor Plant Water Monitor for Potted Plants,Garden,Farm, Lawn(No Battery Needed)

$22^.99

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Volume Discounts:$19.99 - $22.99

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TOF MINI Laser Range Finder Sensor UART Time of Flight Distance Measurement Module Mini LiDAR Distance Detection Unit with Onboard Controller Compatible with Raspberry Pi Robot Obstacle Avoidance

$32^.89

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Soil Moisture Meter, Soil Moisture Monitor for House Plants, Soil Hygrometer Moisture Sensor for Indoor & Outdoor, Garden, Farm, Lawn Plant Care, No Battery Needed(White)

$18^.99

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Volume Discounts:$15.99 - $18.99

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Vszerda 5Pcs HC-SR04 Ultrasonic Sensor Module Kit Distance Sensor Compatible with Mega R3 Duemilanove Nano for Robot XBee ZigBee by ElecRight

$16^.71

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AJMRTC JMT LD2410S 24G Radar Module, 24GHz Human Presence Sensor, Distance Detection Microampere Ultra Low Power Motion Sensing Switch, Human Static Presence Detector for Smart Home, Lighting Control

$16^.40

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AJMRTC BME680 4-in-1 Digital Environmental Sensor Module, Temperature Humidity Barometric Pressure Gas VOC Air Quality Detector, I2C SPI for Arduino STM32 Raspberry Pi Indoor Air Monitoring

$37^.87

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AJMRTC 5Pcs HLK-LD020 5.8G Microwave Radar Motion Sensing Module, Doppler Radar Sensor Board with 2.0/2.54mm Pitch Holes for Embedded Concealed Installation, Smart Lighting, Human Motion Detection

$18^.22

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Water Leak Starter Kit: Hub + 4 Leak Sensor 4 (105 dB Siren), LoRa Long-Range, App/SMS/Email Alerts, D2D Offline, 2 AAA Up to 5-Year Battery, Compatible with Alexa/IFTTT/Home Assistant

$115^.99

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Volume Discounts:$112.99 - $115.99

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GY-21 Si7021 Digital Temperature Humidity Sensor Module Low-Power CMOS I2C Environmental Monitoring Sensor Board High-Precision Digital Output For SHT11/SHT15/SHT21/HTU21 5 Pcs

$12^.89

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AJMRTC HLK-LD1040 X-Band 10GHz Microwave Radar Motion Sensor Module, Low Power Human Presence Detector with Fast Inspection Mode for Smart Home IoT Projects, 5 Pcs

$18^.22

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AJMRTC HLK-LD1040 10G X-Band Micro Motion Radar Sensor Module, Ultra Low Power Doppler Induction Detector with Fast Inspection Mode for Smart Light, Human Motion IoT Sensing, 1 Pack

$11^.09

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WiFi Temperature Humidity Monitor Smart Thermometer Hygrometer with LCD Display 2.4GHz Indoor Climate Sensor App Alerts and Data Export USB Powered Compatible with Google Home

$37^.89

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