Package include 1 x Arduino Uno SMD 3 x 5V singal channel relay 1x Nichrome heating coil 1 x HC-05 Bluetooth module 1 x TP4056 charging module 3 x 18650 li-ion battery 1 x 1S battery holder 1 x 2S battery holder 20 x F-F jumper wire 1x USB cable...
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