1. Parameters:: 1). Size: 62 * 172 * 225 mm. 2). Weight: 2.0 kg. 3). High-contrast touch screen display. 4). Temperature range: Operating Range: 0° to 40° C; Storage Range: -20° to 65° C. 5). Powered by internal battery (6 hours duration). 2. Functional: 1). The LPT-E is used for Integrity pile testing and judging defect position 2). Automatic data storage 3). Signal amplification capability 4). Data can be averaged over a variable number of blows. 5). Variable signal amplification over time 6). 24-bit A/D converter 7). Sample size: 4k 8). Sample Frequency: 48kHz, 96 kHz,144 kHz