Description: 1. Both plug and use, one-key detection 2. Profeional testing of core functions does not require an electrician to come to the door, and you can do it yourself 3. Adjust the 10A small appliance socket/16A major appliance socket to switch 10A/16A, pull out the pin and rotate 4. Easy to carry, more convenient to store, small body and big function 5. AC10 socket, the tester is mainly used to detect the polarity of the plug and the safety of the leakage switch. It can quickly and accurately detect the plug wiring, you can test the socket voltage and display it on the LED display. Parameters: Product Name: Power Wiring Tester Item model number: AC10 Optional Specifications: National Regulations/European Regulations/US Regulations Applicable people: household, electrician, house inspector, etc. Battery: AAA battery*2 (delivery without battery) Features: test power failure National standard parameters: 90V~250V/50~60Hz Leakage detection: 10A/16A switching European regulation parameters: 90V~250V/50~60Hz Leakage detection: voltage display US standard parameters: 110V/ 50~60Hz Leakage detection: voltage display Package List: AC10 Digital Socket Tester Smart Voltage Test RCD 30mA Socket Detector US/EU Plug Ground Zero Line Plug Polarity Phase Check