... with backlight Zero Function Auto Power Off Low battery indicat HT-315/600 Digital AC, AC/DC Autoranging Clamp MeterHT-315 could ... to test presence of load current,Voltage and resistance,etc. HT-315digital Clamp meter ,the use of safe ,convenience ,in high ... ;Open circuit Voltage 1.5V*Size(HxWxD): 205*70*37mm HT-315 digital clamp meter-current AC,Voltage DC/AC autoranging