General features :Tri-Band GSM/GPRS 900/1800/1900MHz(SIM300C) Quad-Band GSM/GPRS 850/900/1800/1900MHz (SIM340C) Dimensions: 50mm x 33mm x 6.2mm DIP type board-to-board connector suit for vehicle . Application: 1:Vehicle carries and ship carries security monitoring machine 2:Long-distance monitor 3:Data acquisition 4:The wireless water, the electricity, the gas copy.
