The Dupro Test Pencil is a professional electrical testing tool designed for voltage detection between 100-500V. This 150mm long device features a clear indicator and comes with a durable construction for reliable electrical testing and maintenance work. Key features: • Voltage detection range: 100-500V • Length: 150mm x 3 • Clear indicator display • Ergonomic design for easy handling • Professional-grade construction • Made by Dupro brand • Comes in protective packaging This voltage tester pencil is an essential tool for electricians and maintenance professionals. The clear indicator provides easy voltage detection verification. The 150mm length allows access to tight spaces while maintaining safe working distance. Always follow proper safety protocols and guidelines when using electrical testing equipment.