Features 1、Multiple Coding Signals Available: Transmitter has eight encoding signals to choose from; Multiple transmitters can be tested simultaneously using different codes, and one receiver can support up to 8 transmitters for signal reception. 2、Signal Strength Adjustable: Emiter: Adjustable signal strength in three levels, helps to avoid false signals causing misreading and prevents strong signals from covering too large an area and causing receiver oversaturation. 3、Multi Level Sensitivity Adjustable: Receiver can be set to automatic or manual detection mode, sensitivity can be adjusted in manual mode. 4、Voltage Measurement and ELV Function (Emitter only): Voltage measurement function, range 8-480V AC/DC (50/60Hz), and can recognize the polarity of DC voltage. The ELV function can light up the ELV indicator light when the port is connected to a voltage greater than 25V without turning on the device. 5、Non Contact NCV Function (Receiver Only): The NCV (non-contact electrical verification) mode is used to verity whether the cable is live or to track the cable without using the transmitter. 6、Flashlight and Backlight Function (Receiver only): Turning on the flashlight and backlight during use in the dark or dark environment can facilitate line finding. Specification Package List Package List: 1 * Transmitter 1 * Receiver 2 * Alligator Clips (Red + Black) 2 * Dual Inline Test Leads (Red + Black) 2 * Connected Probe (Red + Black) 1 * AC Polarity Plug Cord 1 * Auxiliary Grounding Spike 1 * Tool Bag 1 * User Manual (English)