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The integrated ESP8266 is used to control the relay
The Forward Voltage of Red is 2
With reverse wiring protection
The use of wide voltage LM393 comparator
6x14mm Number of Pins 40
6 Pin Pogo Pin Test Clip 1.27mm Single Row for PCB Testing 546 Oval Blue LED(300-400mcd) (Pack of 1000) The integrated ESP8266 is used6 Pin Pogo Pin Test Clip 1. 27mm Single Row for PCB Testing is a precision spring loaded testing and programming clip designed for temporary electrical contact with compact PCBs and embedded modules. Featuring 6 pogo pins arranged in a single row with 1. 27mm pitch spacing, this clip provides stable connectivity for firmware flashing, debugging, circuit testing, and production line inspection without requiring permanent soldering. Features 6 pin pogo