Feature:The product is equipped with LCD display and the reading is clearer.This productcount 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.Specification:Model:H7EC-NVInput voltage: DC 3-36VCounting format: 0-99999999LCD display number: 8 digitsDisplay type: LCD - black characterExternal power supply: Do not (built-in 3V 800mA lithium-ion battery)Input: count input / reset inputReset: external reset / manual reset (minimum reset signal time 20ms)Working temperature: -10 - +55C (no ice or condensation)Storage temperature: -25 - +65C (no ice, condensation)Working humidity: 25~85%Panel opening size: 44.5MM*22.5MMInstallation type: panel mountingTerminal Type: Screw TerminalIntrusion protection: IP66 - dustproof, water resistantProtection: IEC standard IP66, US NEMA standard type 4 (indoor) (but only panel surface)Anti-noise: Square wave noise generated by the noise simulator (pulse width 100ns, 1s rises 1ns)Antistatic force: 8kV (misoperation)Vibration durability: 10 ~ 55Hz, single amplitude 0.375mm, 3 directions, each 2hMalfunction: 10 ~ 55Hz, single amplitude 0.15mm, 3 directions, each 10minImpact durability: 300m/s2, 6 directions, 3 times eachPackage list:1 * CounterNote:The actual product color may deviate from the photo due to light.There may be a slight deviation in the measurement of product.