Feature:1. Receiver: The receiver has a built in induction coil to receive the magnetic signal from the pipe, the coil generates an induced current to calculate the orientation and position of the transmitter.2. 2 Receiving Modes: This pipeline inspection camera receiver has two receiving modes: far (about 5 meters) and near (about 1 meter).3. Sensitivity Knob: The sensitivity knob, peaking mode (maximum), or 0 mode (minimum) can be adjusted to position the transmitter.4. Excellent Performance: The receiver frequency is 512HZ, with 6 level signal strength, long service life and excellent performance.5. Wide Applications: Can be used for water supply pipelines, cable pipelines, pipeline vacuum systems, underground pipeline construction, underground cave exploration, underwater research, etc.Specification:Item Type: Pipe Inspection Camera ReceiverMaterial: PVCReceiver Frequency: 512hzPower Consumption: <3wDistance: About 5 MetersBuilt-in Polymer Lithium Battery: 3000mahCharging Time: About 6 HoursBattery Indicator: 3 Level, Flashes when Battery is LowBattery Working Time: About 10 HoursSignal Strength: 6 Level Speaker: SupportDetection Mode: Far/Near.Package List:1 xPipe Inspection Camera Receiver1 x USB Cable1 x Charger1 x User Manual