NI USB-6008/6009 User Guide and Specifications 30 ni.comSafetyIf you need to clean the module, wipe it with a dry towel.Safety VoltagesConnect only voltages that are within these limits.Channel-to-GND ....................................±30 V max,Measurement Category IMeasurement Category I is for measurements performed on circuits notdirectly connected to the electrical distribution system referred to asMAINS voltage. MAINS is a hazardous live electrical supply system thatpowers equipment. This category is for measurements of voltages fromspecially protected secondary circuits. Such voltage measurements includesignal levels, special equipment, limited-energy parts of equipment,circuits powered by regulated low-voltage sources, and electronics.Caution Do not use this module for connection to signals or for measurements withinMeasurement Categories II, III, or IV.Safety StandardsThis product is designed to meet the requirements of the followingstandards of safety for electrical equipment for measurement, control,and laboratory use:• IEC 61010-1, EN 61010-1• UL 61010-1, CSA 61010-1Note For UL and other safety certifications, refer to the product label or visitni.com/certification, search by model number or product line, and click theappropriate link in the Certification column.Hazardous LocationsThe NI USB-6008/6009 are not certified for use in hazardous locations.EnvironmentalThe NI USB-6008/6009 device is intended for indoor use only.Operating temperature(IEC 60068-2-1 and IEC 60068-2-2)......0 to 55 °COperating humidity(IEC 60068-2-56) ...................................5 to 95% RH, noncondensing