Features: 1. The current clamp adopts magnetic shield and CT digital integration technology, with strong anti-interference, high accuracy and stable test. 2. The innovative automatic plug and pull structure makes the meter easy to clamp or withdraw the tested wire by pressing or pulling the insulation rod, saving time and convenient. 3. Peak hold, data hold and data memory function. Technical Specifications: Model ETCR9020B Wireless H/L Voltage Clamp Leakage Current Meter Measurement Range AC  0.00mA~60.0A Max Resolution 1mA Test Accuracy 0.00mA~999mA:      ±1%±5dgt 1.00A~60.0A:           ±1.5%±5dgt CT Size 48mm Meter Dimension 76mm×255mm×31mm Receiver:78mm×165mm×42mm Meter Weight 3630g (include insulation rod) Power Supply 6V DC(LR03×4pcs alkaline dry batteries) LCD Dimension 47mm×28.5mm Sampling Rate 2 times/s Communication Mode Wireless transmission, straight distance 30m (only for ETCR9020B) PEAK Hold Automatically hold the highest test value (only for ETCR9020) Data Hold In usual test mode, press HOLD key to keep data, "HOLD" symbol display Data Storage 99 groups , stored process display MEM symbol, "FULL" symbol display indicate that storage full Data Access "MR" symbol indication, can access all storage data Overflow Display Exceed measure range overflow function: "OL  A" symbol display Automatic Shut Down 15 minutes after boot up, the meter shuts down automatically without any operation, to reduce battery consumption Battery Voltage When battery voltage is lower than 4.