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can real-time your heart rate graph display
Micro SD slot
the resolution in the range of ±2A of current measurement
6mm double-sided fiberglass board does
sturdy and durable to use
6x AA Battery Holder Case/Slot w/ DC Jack output 5.5V 160mA can real-time your heart rate6x AA Battery Holder Case Slot w DC Jack output This is 6 x AA battery case storage holder with DC2. 1 power jack for Arduino Holds 6 x AA batteries (not included) which can make 7. 2 V rechargeable battery pack from NiMH NiCd cells or 9V battery pack from alkaline cells Power supply for monolithic system, For Arduino system, 2WD mobile robot etc With DC05 power supply plug Cable Length: 12cm Specifications: Voltage: 9V Material: Plastic Power: 6 x 1.
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