Frequency Meter/Tachometer, Codix 136. 8 digit LCD counter for applications without power supply (battery powered) Frequency meter to measure 1/s Very good readability due to leading zero blanking and 8mm digit height Bezels for screw mounting included Easy to use, no programming required Panel cut-out: 22.2mm x 45mm Operating temperature: -10 +60°C IP65 Rated