1. Cable tracking function: The cable tracking function can quickly and efficiently find the target cable in a large number of cables. This feature can be used in telephone systems, computer networks, BNC cables and other metallic network cables. 2. Cable length test: This function can be applied to different metal cables with at least 2 cores, including network cables, telephone lines and BNC cables. 3. POE test: POE test can check the cable mapping polarity and voltage of POE network switches. 4. Multi-function cable tester: This cable tester has functions such as analog tracking, cable mapping, PoE voltage measurement, and digital tracking sensitivity can be adjusted. 5. LCD display with torch: The transmitter of this line hunter adopts a large LCD display, giving you a better experience, the torch allows you to turn on when the light is dim. 6. Multimeter function: This function includes DC and AC voltage and current measurement, resistance, continuity, diode, temperature measurement (ET618 only). 7. The network cable length measurement range of ET616 is 400M, and the measurement range of ET618 is 500M. Only the ET618 has a multimeter function. Note: The identity pairing function is implemented through the remote identity mapping accessory, which is not included in this package. parameter: 1. Material: ABS 2. Analog Tracking: Yes 3. Switch Tracking (w/PoE): Yes 4. Cable Mapping: Yes 5. The switch indicator flashes: yes 6. Noise-free digital tracking: -ET616: Digital -ET618: Digital/Vibration 7. PoE Voltage Measurement: Voltage Polarity 8. Analog bar graph: yes 9. NCV detection: yes 10. Host: built-in lithium battery, 1250mAh (included) 11. Receiver: 1 x 9V battery (not included) Multimeter Specifications (ET618 only): 1. DC voltage: 400mV~1000V+/-(0.8%+3) 2. AC voltage: 4V~400V+/-(1.5%+5) 3. DC current: 1.0A~10.0A+/-(1.2%+4) 4. AC current: 1.0A~10.0A+/-(2.0%+5) 5. Resistance: 200??~20M??+/-(2%+6) 6. Continuity: less than 50??, the buzzer beeps 7. Diode: Yes 8. Temperature (type k): -20~1000 degrees Celsius +/- (2.0%+15) ET616 Packing List: 1 x host 1 x Storage Bag 1 x Receiver 1 x User Manual 1 x Test Clip Wire 1 x network cable 1 x charging cable 1 x Storage Bag ET618 Packing List: 1 x main unit 1 x Storage Bag 1 x Receiver 1 x User Manual 1 x Test Clip Wire 1 x network cable 1 x charging cable 1 x Temperature Probe 1 x multimeter probe