Lamerholm Electronics RD317 Micro ShockLog (http://rbi.ims.ca/4927-546). Semiconductor accelerometer technology makes this programmable, tri-axial shock recorder light weight and affordable for tracking products in production, transit or storage. The 85 x 85 x 50 mm unit weighs only 0.3 kg and has maximum operating range options of 10 and 100g. The sensorís low-power requirements and the unitís low power mode (until a wake-up threshold is exceeded) allow it to record information for as much as nine months from a single AA battery. Wake-up and alarm threshold are programmable from 10 to 95 percent of full scale. Wake-up time is 1.5 msec.