IP 67 waterproof & dustproof protection, completely sealed for use in harsh environments• Designed to withstand 3 meter drop (with holster)• Backlit keypad buttons allow for easy visibility in lowlit areas• Withstands hazardous 8, 000 volt spikes caused by load switching & faults on industrial circuits & complies with second edition IEC & ANSI electrical safety standards•MSHA approval The Fluke 27 II digital multimeter defines a new standard for operating in harsh conditions with the features & accuracy to troubleshoot most electrical problems. IP 67 (waterproof & dustproof) rating, MSHA approvals, extended operating temperature range of -15 °C to +55 °C (5 °F to 131 °F, -40 °C for up to 20 minutes) & 95 % humidity, & have been designed & tested to withstand a 3 m (10 ft) drop. The Fluke 20 Series Multimeters are built to work in the toughest environments