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When a touch is sensed on the circular marked region
Chip: SIM800L
When a capacitive load (such as a human hand) is in close proximity to the sense-pad
The board is just half the size of a Raspberry Pi Model A+
smartphones and tables
Battery Holder (18650) 3 Cells tip 42 When a touch is sensedIntroduction : It help you using a rechargeable lithium ion battery using this cell 18650 battery holder . This is a great option for when you want to take the cells out of your device and recharge them separately. Features : Capacity: 3x 3. 7V 18650 Lithium Cell.
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