Description Specifications Description This item has been discontinued and replaced by the T77630-10. The TACHTROL 20 is designed to provide the versatility and flexibility needed to accommodate virtually any rate measuring application. The TACHTROL 20 is a single input digital instrument configurable to display application- specific information. This meter has been specifically designed for harsh industrial environments. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications AC Power:115/230 volts selectable DC Power:10-16 volts at 0.1A max Operating Temperature Range:0° to 60°C Frequency Range:0.1 to 25 kHz Literature & Docs Accessories