Easily locate the blockage point for pipes underground or in the wall. With 5 free probe heads and self checking function, NF-5120/NF-5130 is easy to operate and maintain.
Functional features
1.The emitter
-Probe self-check function: automatically detect the probe after starting up.Open circuit: one short beep “di” prompts short circuit:two short beep “di” prompts normal; one long beep “di” prompts long beep, and the probe enters the working mode.
Charging indicator function:
-Red light when charging , green light when full.Low power alarm and battery protection function: low voltage(lt;3.6V), green light flashing alarm, ultra-low pressure (<3.2V),the instrument automatically shuts down to protect the battery.Automatic shutdown function, automatic shutdown after 1 hour,to prevent forgetting to shut down resulting in power depletion

2.Receiver
-Power detection function: automatically detect the battery power turning on,represented by 5 LED lights, all on means full power
3.Charging indicator
function: the red light is always on during charging; when the light turns to green it means the battery is fully charged .
-Power alert function:
Normal power: green light is always on and low voltage (lower than 3. 6V), green light 1 second slow flashing alarm, ultra-low (lower than 3.2V), the green light flashes for 3 seconds and then turns off to protect the battery
-Automatic shutdown function:
Automatic shutdown after 30 minutes, to prevent for getting to shut down resulting in power depletion.
-Indicating function of signal intensity:
The signal lamp can accurately indicate the signal intensity, and has the function of brightness adjustment
-The detection range is adjustable from 5 cm to 50cm

How to use the product:
3.1.Turn on and off the transmitter:
-Press the power button for 2 seconds in the off state, when the power indicator is green, otherwise it will be turned off
-Receiver: turn the knob clockwise to power on the battery in the first 2 seconds after power on, using 5 LED to re present the battery, all of which are fully charged
3.2Pre-use inspection.
-Transmitter: turn on and spin the probe out for a while, and the probe is at a distance from the transmitter.
-Receiver: power on to the maximum sensitivity, put the receiver close to the transmitter probe, if the receiver emits a strong signal sound, it means that the instrument is normal, such as the receiver does not make sound or the sound is very low, the probe needs to be replaced.
