Feature: 1. Non-contact NCV Detection: The digital pen meter has a built-in sensor and red LED indicator to help you detect the presence of AC voltage nearby.The closer you are to the power source, the more urgent the alarm, ensuring your safety in hazardous working conditions. 2. Firewire Detection: The Smart Pen Multimeter's built-in firewire detection function allows you to easily measure and identify the fire, neutral and earth wires of your circuit, ensuring your safety and reducing the risk of electrical hazards when using firewires. 3. Open Circuit Detection: The multimeter features an innovative open circuit detection function that allows you to easily identify open circuits on the firewire using a non-contact voltage detection mode. This feature makes it an essential tool for professional electricians and DIY enthusiasts. 4. With Torch Function: The pen-type multimeter has a bright torch at the tip position that helps you to effectively illuminate dark and hard-to-see areas, allowing you to work in low-light environments with ease.With its ergonomic design and portable size, the torch can be taken anywhere, giving you the flexibility to work in a variety of different environments. Display Type: Digital display Product model: A3005 AC voltage: 0.8V-600V DC voltage: 0.8V-600V Resistance: 0.1 ~40M NCV induction: Yes Live zero line: Yes Buzzer: Yes Backlit screen: Yes Automatic shutdown: Yes Data retention: Yes Low power prompt: Yes name:Pen-type Multimeter Maximum count: 4000 Battery: AAA * 2 (without battery, self provided) Size: approximately 183.5x29x26mm/7.22x1.14x1.02inch Colour: Black Material: ABS Package Contents: 1 x Pen-type Multimeter Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.