Feature: 1. [Induction Coil] The receiver has a built in induction coil to receive the magnetic signal from the pipe, and the coil generates an induced current to calculate the orientation and position of the transmitter. 2. [Position Transmitter] Adjust the sensitivity knob, peak mode (maximum) or zero mode (minimum ) to position the transmitter, to meet your various need. 3. [Save Time] The position of the probe can be easily determined using the 512Hz transmitter, which can effectively save time, so you can use it with confidence. 4. [Durable Material] This pipe inspection receiver is made of ABS material, which is durable, safe, a single charge can power the plumbing inspection camera for 10 hours, can be used for a long time. 5. [Widely Application] Widely used in water supply pipelines, cable pipelines, pipeline vacuum systems, underground pipeline construction, underground cave exploration, underwater research, etc. Specification: Item Type: Sewer Inspection Receiver Material: ABS Receiving Frequency: 512HZ Plug Specifications: 100-240V Receiver Battery Parameters: 18650 lithium-ion battery 3000MAH (Battery Included) Maximum Test Burial Depth: 5 meters Power Display: 4 gears Power Consumption: <3W Continuous Use Time: More than 10 hours Application: All 512HZ frequency linear loss positioning Detection Mode: Long distance mode (5 meters), short distance mode (1 meter) Weight: Approx. 1896g / 66.9oz . Package List: 1 x Receiver (Battery Included)1 x Receiver Accessories1 x Power Adapter1 x Storage Box1 x Chinese And English Manual