GSM/GPRS module ( SIM900) original 74HC139 (Dual 2 to 4 Line Decoder) Anti-heat ceramic fiber + heat

Anti-heat ceramic fiber + heat resistance tape:   provide more consist heating and uniform thermal zone

The USB interface is achieved by using an atmega8 processor and the rest is done in firmware

This breadboard wire kit contain 140 pieces of U shape wire jumpers of different sizes and colors specially made to be used for solderless breadboard connections

this Carbon Dioxide (CO2) sensor probe allows the measurement of dissolved carbon dioxide directly in the water and soil

GSM/GPRS module ( SIM900) original 74HC139 (Dual 2 to 4 Line Decoder) Anti-heat ceramic fiber + heatISM900 is an ultra compact and reliable wireless module. This is a complete Quad band GSM GPRS module in a SMT type and designed with a very powerful single chip processor integrating AMR926EJ S core, allowing you to benefit from small dimensions and cost effective solutions. Featuring an industry standard interface, the SIM900 delivers GSM GPRS 850 900 1800 1900MHz performance for voice, SMS, Data, and Fax in a small form factor and with low power