Note: 1.There may be slight errors due to manual measurement. Please refer to the real object. 2. Please read the user manual measurement carefully before using this product. 3. Batteries are NOT included, which need to be purchased separately. Features: * Effectively measure household power voltage with accurate test results. * Large backlit screen, clearly shows the value even in a dark environment. * Immediately help detect sockets with invisible hazards, offering a safe use environment. * Feature leakage protection, better ensuring security during use. * Adopt 2 * AAA batteries (not included), easy to replace, providing ultra-long and durable battery life. * Plug and play, simple to use. Ergonomic slim body, comfortable to grasp with one-hand, make measurement easier. Specifications: Model: AC10 Color: Black Material: ABS Plug Type: US / EU / UK (Optional) Battery: 2 * AAA batteries (not included) Voltage Range: 90-250V / 50-60Hz RCD Current: 30mA RCD Working Voltage: 22020V Operating Temperature: 0~40 Storage Temperature: -10~50 Working Humidity: 20%-75%RH Storage Humidity: 20%-80%RH Item Size: 70 * 70mm Package Size: 80 * 75 * 65mm Package Weight: 110g Package List: 1 * Socket Tester 1 * User Manual