Features: Multifunctional Voltage Tester with steel construction ensures long service life than conventional materials, featuring intelligent circuit detection to prevent accidental shocks. Equipped with LED lighting and blue backlit LCD screen for precise readings in dark environment, combining durability with error reducing clarities. Ideal for professional electricians and DIY homeowners requiring reliable electrical testing tool during installations, repairs, or routine maintenance tasks. Optimized for low light workspaces like basements, outdoor sites, or nighttimes emergencies where accurate voltage detection is critical. Ergonomic grip and single touch operation simplying electrical diagnostics, making it a must circuit detector for both novices and technicians. Specifications: Material: ABS, Steel Size: about. 144X26mm/5.67x1.02in Package Includes: 1pc Digital Voltage Test Pen note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.