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To measure on-display temperature
this module will send the card number to Arduino by UART You can further connect the relay Arduino shield to your Arduino in order to enable the simple door keeper controlling system
read and write are inhibited
Relay can be used as an electrically operated switch
6 Pin Toggle Switch (3A 250V) Berg Strip To measure on-display temperature6 Pin Toggle Switch (3A 250V) This is a standard 6 PIN SPDT On Off Toggle Switch. The front part of the switch has a screw and can be easily mounted to an enclosure using a nut. The switch comes with a washer and a nut for easy mounting to enclosures. This Mini Panel Mount SPDT Toggle Switch is great for any project where you have two options to select between. Application: Lighting Motors DIY Projects