BENETECH GM505 GM510 GM511 GM520 Handheld Digital Pressure Gauge Tester  Meter Manometer GM505 Features: * Large LCD * Data hold * With differential mode and record mode * USB-poort * Reset en data adjustment * Low battery indication and automatic power off  Specifications: * Measuring range: +/-2.49kPa * Accuracy: +/-0.25%FSO * Repeatability: +/-0.2%(Maximum +/-0.5%) * Linearity/hysteresis: +/-0.29% * Response: Typical 0.5 s * Low battery indication * USB communication * Up overload indication * Down overload indication * Operating temperature: 0 ~50 & 8451; * Storage temperature: -10~60 & 8451; * Power supply: 1.5V AAA battery*4 ( No included ) Manometer GM510 Measuring range: +/-10kPa Accuracy: +/-0.3%FSO(25& 8451;) Repeatability: +/-0.2%(Maximum& 65291;/& 65293;0.5%FSO) Linearity/hysteresis: +/-0.29%FSO Response: Typical 0.5 s Low battery indication USB communication Up overload indication: Err1 Down overload indication: Err2 Operating temperature: 0~50C Storage temperature: -10~60C Power supply: 1.5V AAA battery*4 GM510 GM511 GM520 Manometer GM510: * Measuring range: +/-10kPa * Accuracy: +/-0.3%FSO(25& 8451;) * Repeatability: +/-0.2%(Maximum& 65291;/& 65293;0.5%FSO) * Linearity/hysteresis: +/-0.29%FSO * Response: Typical 0.5 s * Low battery indication * USB communication * Up overload indication: Err1 * Down overload indication: Err2 * Operating temperature: 0~50C * Storage temperature: -10~60C * Power supply: 1.5V AAA battery*4 Manometer GM511 * Measuring range: +/-10kPa * Accuracy: +/-0.3%FSO(25& 8451;) * Repeatability: +/-0.2%(Maximum& 65291;/& 65293;0.5%FSO) * Linearity/hysteresis: +/-0.29%FSO * Response: Typical 0.5 s * Low battery indication * USB communication * Temperature Compensation Function * Up overload indication: Err1 * Down overload indication: Err2 * Operating temperature: 0~50C * Storage temperature: -10~60C * Power supply: 1.5V AAA battery*4 Manometer GM520 *Measuring range: +/-350kPa * Accuracy: +/-0.3%FSO(25& 8451;) * Repeatability: +/-0.2%(Maximum& 65291;/& 65293;0.5%FSO) * Maximum Pressure: 150kPa * Linearity/hysteresis: ±0.29%FSO * Response: Typical 0.5 s * Low battery indication * USB communication * Up overload indication: Err1 * Down overload indication: Err2 * Operating temperature: 0~50C * Storage temperature: -10~60C * Power supply: 1.5V AAA battery*4 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin