Product Description H7EC NFV AC 110-220V Digital Electrical Counter Totalizer with 8-Digit LCD Display 8-Digit Display Counter The product is equipped with LCD display and the reading is clearer. This product count accurately and reliably. This is a digital counter, no mechanical wear, long service life, instead of electromagnetic counter. Lithium batteries are built-in. The theoretical life of the batteries can be as long as three years and the memory time is long. Standard panel installation model, easy to install. Package list: 1 * Counter Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product. Specification: Input voltage: AC 110-220V Counting format: 0-99999999 LCD display number: 8 digits Display type: LCD - black character External power supply: Do not (built-in 3V 800mA lithium-ion battery) Input: count input / reset input Reset: external reset / manual reset (minimum reset time 20ms)Working temperature: -10 - +55°C (no ice or condensation)Storage temperature: -25 - +65°C (no ice, condensation)Working humidity: 25~85% AC 110-220VAC Input Counter Panel opening size: 44.5MM*22.5MM Installation type: panel mounting Terminal Type: Screw Terminal Intrusion protection: IP66 - dustproof, water resistant Protection: IEC standard IP66, US NEMA standard type 4 (indoor) (but only panel surface)Anti-noise: Square noise generated by the noise simulator (pulse width 100ns, 1μs rises 1ns)Antis tatic force: ±8kV (misoperation)Vibra tion durability: 10 ~ 55Hz, single amplitude 0.375mm, 3 directions, each 2hMalfu nction: 10 ~ 55Hz, single amplitude 0.15mm, 3 directions, each 10minImpac t durability: 300m/s2, 6 directions, 3 times each