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 Receiver Material: PVCReceiver Frequency: 512hz Power Consumption: <3w Distance: About 5 Meters Built-in Polymer Lithium Battery: 3000mah Charging Time: About 6 Hours Battery Indicator: 3 Level, Flashes when Battery is Low Battery Working Time: About 10 Hours Signal Strength: 6 Level Speaker: Support Detection Mode: Far/Near. Package List: 1 x Pipe Inspection Camera Receiver1 x USB Cable1 x Charger1 x User Manual