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Protective Ear Plugs. Simply slot into each ear. Perfect for those working in manufacturing and other noisy environments. Corded and in a box of 200
















The Arduino Ethernet is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins, 6 analog inputs, a 16 MHz crystal oscillator, a RJ45 connection, a…
RF24L01B low power wireless module, use NRF24L01 chip from Nordic, 2.4G lisence-free ISM band, highest working data speed is 2Mbps,