5V-30V Delay Relay Timer Module Trigger Delay Switch Micro USB Power Adjustable Relay Module Witty Fox 3.7V 800mAh Li-ion GPS Battery Build your own portable power

Build your own portable power bank or battery-powered project with this versatile 2-in-1 charge/discharge module from The Engineer Store

easily paired with software libraries like VirtualWire or RadioHead

This is critical for remote deployments without reliable wired infrastructure

DIO0-DIO5) Operating Voltage 1

useful for unattended monitoring sessions

5V-30V Delay Relay Timer Module Trigger Delay Switch Micro USB Power Adjustable Relay Module Witty Fox 3.7V 800mAh Li-ion GPS Battery Build your own portable power5V 30V Delay Relay Timer Module Trigger Delay Switch Micro USB Power Adjustable Relay Module 5V 30V Delay Relay Timer Module Trigger Delay Switch Micro USB Power Adjustable Relay Module 5V 30V Delay Relay Timer Module Trigger Delay Switch Micro USB Power Adjustable Relay Module Wide Voltage 5V 30V Trigger Delay Relay Module Timer Module Delayed On Delay Switch Button. The time can be adjusted by potentiometer to meet your use of most occasions. With