This part is Non-Cancelable and Non-Returnable once the production order is placed with the factory. C342-0464 - Veeder-Root Count Totalizer, 8 Digit LCD, Self-Powered A very compact tachometer available standard with choice of LCD or LED display. Choose from self-powered models containing a 7 year lithium battery, or from models accepting an external 12 - 24 VDC power supply. Externally powered units utilize a nonvolatile RAM to retain data during absence of power. Product Type Electronic Function Reset Totalizer, Non-Reset Totalizer Size 1/32 DIN 24x48mm Voltage Internal battery Input NPN Sensor, PNP Sensor, Switch/Contact Closure Input Scaling Without Input Scaling Number of Digits 8 Display LCD Certifications CE, RoHS Environmental 4X NEMA, IP65