The sg20 product line has been expanded to include a new imaging option ea31 like our ea30 this new imager offers blistering fast scanning performance motion tolerance and omni directional reading capability the primary difference is in aimer technology the ea30 uses a laser based aiming system while ea31 uses an led based aiming system that is ideal for customer facing applications like retail point of sale the intermec sg20 is an affordable high performance handheld scanner availabl