Features:The sensitivity of the receiver can be adjusted either manually or automatically.The transmitter has the function of self-inspection and both transmitter and receiver have mute function.Compact structure, strong and durable, convenient to carry.Transmitter built in DC/AC voltage meter for linear measurement of 12-400V DC/AC voltage.The transmitter and receiver display power level, code, battery, detected voltage type and value, and high-voltage alert.Application:This instrument which is widely used in communication cable construction, electrical cable construction, building pipeline construction, telecommunications cables, power supply circuits and electric line maintenance is an indispensable tool for maintenance personnel.Detecting cables, electrical lines, water/gas supply pipelines buried in wall or earth.Detecting interruptions and short circuit in cables and electrical lines buried in wall or earth.Detecting fuses and assigning current circuits.Detecting interruptions and short-circuits in floor heating;Detecting sockets and distribution sockets having accidentally been covered.Specification:Voltage Measurement Range: Transmitter: AC/DC 12V-400V Output Signal: Transmitter: 125KHzVoltage: Transmitter Max. AC/DC 400VCable Depth Measurement: Receiver 0-2.5m (wall / underground cable)Main Voltage Measurement: Receiver 0-0.4mWork Environment: Transmitter & Receiver: 0~40Storage Temperature: Transmitter & Receiver: -20 ~ 60Relative Humidity (no condensation): Transmitter & Receiver: Max. 80%Measuring Height: Transmitter & Receiver: Max. 2000mTransmitter Battery: 1pcs x GL6F22A 1604A Battery (NOT included)Receiver Battery: 6pcs x 1.5V AAA LR03 Battery(NOT included)Test Lead Length: Approx. 1.2m/3.9ftTest Pen Length: Approx. 12.3cm/4.8inchGround Rod Size: Approx. 22.7 x 11cm/8.9 x 4.3inchTransmitter Size: Approx. 19 x 8.9 x 4cm/7.5 x 3.5 x 1.6inchReceiver Size: Approx. 24 x 7.8 x 3.5cm/9.4 x 3.1 x 1.4inchWeight: Approx. 1373g / 48.4ozPackage List:1 x Transmitter1 x Receiver2 x Crocodile Clamps (Black, Red)2 x Test Leads (Black, Red)2 x Test Probes (Black, Red)1 x Ground Rod1 x User Manual1 x Black Bag1 x Strip.