Testpen Bunyi - NANKAI Voltage Tester NANKAI Series -Hi-Tech, Advanced tester allows you to safety, quickly, accurately check for the following main features: 1. AC VOLTAGE TEST: Contact method from 70-250VAC. Non-Contact method from 70-10,000VAC. 2. DC VOLTAGE TEST: Up to 250VDC. 3. POLARITY TEST: 1.2V-36VDC> 4. CONTINUITY TEST: 'O'= 0-5M, 'L'= 0-50M, 'H'= 0-100M. Batteries Type: LR44, 157, V13GA, AG13, A76, etc. Battery Life: Min. 5 hours of continuity operation when at 'O' position.