1. Detect the laying paths of cables, electrical circuits, water and gas supply pipelines buried in walls and underground;2. Detect cables buried in walls and underground, as well as open and short circuit faults in electrical circuits; Search for fuses and safety circuits;3. Look for covered sockets and junction boxes;4. Find broken and short circuit faults in the electric heating lines under the floor; The transmitter is equipped with an embedded AC/DC voltmeter function, which can linearly measure AC and DC voltages of 12-400V;The display of the transmitter and receiver can display the set transmission power level, transmission code, its own battery level, and the measured external voltage value. The measured external voltage is AC or DC, as well as the external high-voltage lightning warning symbol;The receiver LCD screen has backlighting function, making it easy to apply in environments with poor fiber optics Both the receiver and transmitter are equipped with flashlight function to detect cables in dark conditions Applications: Installation and maintenance of weak current system, communication line,comprehensive wiring circuit, telephone system, computer network, other metal wire circuit etc. Professional level, check the cable inside the wall.Can check the line inside the wall.Detect the line direction/break point and short circuit buried in the wall. Detect pipes inside the wall and underground.Find disconnection and short-circuit faults in the electric heating line under the floor Find fuses/fuse circuits/covered sockets and junction boxes Measure AC/DC voltagecan measure 12-400v AC/DC voltage Detect cable inside the wall and underground.Detect cables buried in walls and underground,Electric circuit break and short circuit fault. USB Lithium Direct Charge1400mAh Lithium battery has long use time Longer battery life. NCV Non-contact test electric penHigh voltage measurement, zero contact Flashlight lightingTurn on the flashlight function in the dark or dark environment to facilitate work NF-826 Technical parameters of transmitter Output signal 125kHz External voltage DC 12~400V ±2.5%; identification range AC 12~400V(50~60Hz) ±2.5% Display LCD, with function display and column chart External voltage Max. 400V AC/DC dielectric strength CAT III 300V Overvoltage type 2 Power supply 3.7V 1400 mAh Lithium battary MIN curren 80mA MAX curren 300mA Fuse 0°C ~ 40 °C, with maximum relative humidity In work of 80% (non-condensation) In storage -20°C ~ 60°C,with maximum relative humidity of Altitude 80% (non-condensation) Max. 2000m Dimensions (HxW*D) 156 x 80 x32 mm Weight 235g with battary NF-826 Technical parameters of receiver Depth of tracking The depth of tracking depends on the material and specific applications Single pole application About 0~1m Dual-pole application About 0-0.5m Single loop line Up to 2.5m Grid voltage identification About 0~0.4m Display LCD, with function display and column chart Power supply 3.7V 1400 mAh Lithium battary MIN current 100mA MAX current 300mA In work 0°C ~ 40°C,with maximum relative humidity of 80% (non-condensation) In storage -20°C ~ +60°C,with maximum relative humidity of 80% (non-condensation) Altitude Max. 2000m Dimensions (HxWxD) 226 x 73 x29 mm Weight 235g with battary