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1. NF-826 Underground In-Wall Wire Locator is a portable instrumentwhich consists of transmitter receiver and accessories.Selecting new integrated devices and digital circuit technology the electrical performance is stable and reliable. According to the change of the signal the specific location and fault of the buried cable or pipeline can be detected. 2. It Can Detecting cables electrical lines water/gas supply pipelines buried in wall or earth; interruptions and short circuit in cables and electrical lines buried in wall. Detecting fuses and assigning current circuits;Detecting interruptions and short-circuits in floor heating 3. The sensitivity of the receiver can be adjusted either manually or automatically. can sweep frequency automatically. Both the transmitter and the receiver can work under mute mode. Additional transmitters are available to extende or distinguish multiple signals. it can automatically turn off the power after 10 minutesIf you forget to turn off the power when you are not using it.Compactness-durability and portability. 4. The transmitter is integrated with the function of AC/DC voltmeter which can measure : 12 to 400V AC/DC voltage on a linear basis: AC: 12 400V 50 to 60 Hz 2.5%. DC: 12400V 2.5% 5. Applications: Installation and maintenance of weak current system communication line comprehensive wiring circuit telephone system computer network other metal wire circuit etc. /b Precautions br br 1. The working temperature of this tester is 0-40C 32-104*F br 2. In order to avoid damage to the detector severe mechanical vibration should be avoided during handling and use especially to avoid falling accidents and avoid long-term direct sunlight and strong electromagnetic areas.Please read and understand the safety precautions before using or servicing this equipment. br 3. Only professionals can calibrate and repair the detector. br 4. Before each use check whether the detector and the measuring line are damaged. Please make sure that the detector and the measuring line used are in good condition. br 5. When using the detector the rated voltage of the tested circuit cannot be greater than the rated voltage of 400V. br 6. When the transmitter is connected to a live power grid if the “groundjack of the transmitter is connected to the protective ground when there is leakage current in the power supply line this leakage current and the loop current of the transmitter may combine which may cause leakage The protection switch trips which triggers the FI/RCD disconnection.