Rosewill REGD-6361 3-in-1 Stud/Metal/Voltage Detector with LCD Display
• Volts: 9-Volt 6F22 Battery (Not Included)
– Without Buzzer Sound: < 6mA
– With Buzzer Sound: < 40mA
• Type: Stud Finders
• Detection Distance
1. Metal detection (Object Size not Less than 15mm x 50mm) Distance Around 30 – 50 mm; According to Various Materials and Objects Area Response to Change over Distance.