... -315/600 Digital AC, AC/DC Autoranging Clamp MeterHT-315 could be used to test presence of load current,Voltage and resistance,etc ... . HT-315digital Clamp meter ,the use of safe ,convenience ,in high –quality but in low ... current 0.3mA;Open circuit Voltage 1.5V*Size(HxWxD): 205*70*37mm HT-315 digital clamp meter-current AC,Voltage DC/AC autoranging