AERPRO APPS4WF (01) PDF MANUAL

The minimum detection distance is 0.30m. However, maintaining enough space to stop your car is still recommended. Considering the car’s inertia, it is best to stop when the displayed distance is shorter than 0.60m.

False alarms can be caused by interference from sound waves such as horns and air brakes.

Car speed should be less than 3-5 km/h when parking. Parking too quickly can cause accidents, regardless of the parking alert system’s effectiveness.

The distance between the closest obstacle and the front or rear sensor is displayed in meters, with a resolution of 0.01 meters.

The built-in beeper provides an audible distance warning with a variable cadence.

After self-test, illuminated icons indicate that the corresponding position sensors are operating normally. The location of the closest obstacle is indicated by a flashing icon. If a sensor fails, its corresponding icon will be extinguished.

When an obstacle is detected, the display will indicate the safe zone (blue), alert zone (yellow), and dangerous zone (red).

The front sensor display can be turned on or off by pressing the button once (Front Sensor On/Off Setting button, labeled ‘5’ in the diagram) while the car is moving forward. Note: There is no memory function; the system defaults to ON when powered on.

The volume can be adjusted from level 0 to level 8 using the button on top of the display (Volume Setting button, labeled ‘6’ in the diagram).

The system is activated when the car’s speed is less than 15 km/h, as determined by the car’s GPS. The system is deactivated, and the speed is displayed, when the car’s speed exceeds 15 km/h. The speed display can be turned off by pressing the Front On/Off button (labeled ‘5’).

The voltage is displayed for 3 seconds after the car is started.

The device uses varying sound rhythms to indicate the location of detected obstacles. The alarm volume automatically decreases after 3 seconds if the obstacle distance remains constant and ceases entirely after approximately 2 seconds at the reduced volume.

The alarm volume has 3 adjustable levels.

1. Turn off the device.

2. Press the pair button using a paper clip or similar.

3. Power on the device to enter volume adjustment mode.

4. Short press the pair button to reach the desired volume.

5. Power the device off and on again to set the volume.

The detection range has 5 levels (factory default is level 3).

1. Press and hold the pair button for 6 seconds to initialize the setting.

2. The number of beeps corresponds to the level (1 beep = level 1, 2 beeps = level 2, etc.).

3. Each 6-second press and hold increases the level by one.

4. The new level will be set after powering off and restarting the system.

With both the speaker (beeper) and controller powered on, press the pair button once using a paper clip or similar. Two beeps from the speaker confirms successful pairing.

For models with speed control function (APPS4WF), the blue LED will emit flashes when speed is detected.

For models without speed control function (APPS4WCR), the blue LED located on the beeper will not turn on or emit flashes, which indicates GPS speed is unavailable.

Solid RED: Indicates no communication with the control module.

Flashing RED: Indicates only front sensors are paired.

Flashing GREEN: Indicates only rear sensors are paired.

Alternating RED & GREEN flash: Indicates Front & Rear sensors are paired.

The speaker will emit a heartbeat-like alarm sound when an object is detected.

The frequency of the beeping sound will increase as the object gets closer to the front (or rear) of the vehicle.

A continuous beep will sound when the detection distance is less than 30 cm.

If the detection distance remains unchanged, the alarm volume will automatically decrease after 3 seconds and will stop completely after approximately 2 seconds at the low volume.

When driving forward slowly, the front sensors are active. If no objects are detected within 3 seconds, a “/” symbol indicates that the sensor is operational. The display turns on when an object is detected.

The front sensor is controlled by the car’s GPS speed. The sensors activate when the speed is below 15 km/h and deactivate when the speed exceeds 15 km/h. When deactivated, the display shows the current speed. You can turn off the speed display by pressing the large button on top of the LCD Display (Front On/Off button).

1. Press the Front On/Off button to turn on the power.

2. Press the Volume button to select the sensor you want to adjust.

3. Press the Front On/Off button to increase the distance in 0.1-meter increments. Use the circle graphic on the display to choose the desired distance.

4. Power off and then repower on for the new setting to take effect.

1. Press the Volume button to turn on the power.

2. Press the Volume button to select the sensor you want to adjust.

3. Press the Front On/Off button to increase the distance in 0.1-meter increments. Use the circle graphic on the display to choose the desired distance.

4. Power off and then repower on for the new setting to take effect.

Press the Pair button (on the Beeper unit or top of LCD display, depending on model/context) and turn on the power. A “beep” sound confirms that the settings have been reset.

1. Clean any sand, ice, snow or other dirt on the sensors’ surface immediately and ensure the sensors’ surface is kept clear.

2. You may re-paint the surface of the sensors if you use a very light coat of paint. Be careful, because thick paint will significantly affect detection.

3. Do not press in the sensor center core.

Position: The position of the sensors must be within the required scope of installation (typically h=0.50m~0.70m from ground, X=0.15m~0.25m inset from side for outer sensors), and the whole surface should be perpendicular to the ground (angle α = 25° ~ 40° relative to horizontal plane depending on bumper shape may be acceptable).

Direction: The arrow on the plug-in sensor should be upward. If the installation surface is too high or inclined upward, the arrow can also be downward to correct the angle.

Clearance: Make sure that the rear of the installed sensor is not in contact with any objects.

Metal Bumpers: For metal bumper bars please first install the supplied silicone/rubber sleeves and then install the sensor.

The wires cannot be cut and reconnected.

The wiring should be installed without pulling or squeezing.

Keep wiring away from exhaust pipes, water tanks, electronic fans, and other similar components.

Ensure the plug between the sensor and the extension cable, as well as the extension cable connector to the controller socket, are firmly rotated and inserted into place. Failure to do so may result in malfunctions.

Mounting: The LCD display can be mounted on the driver’s side left or middle of the dashboard.

Wiring: Route the display power cord through the concealed part of the dash seal to the ACC power supply at the fuse panel.

Connections: Red = Power (ACC or IGN supply), Black = Ground (Ideally crimp an eye terminal and connect to an existing factory bolt going to the chassis).

Location: The front wireless controller is waterproof and can be installed in a suitable, fixed position within the engine bay. For optimal performance, install the controller as far away as possible from the car battery and any high-current wiring harnesses.

Power: The front wireless controller can be powered directly to the car battery or to an ACC source in the engine bay, as its static current is less than 0.3mA.

Connections: Red = Power (ACC or IGN supply), Black = Ground (Ideally crimp an eye terminal and connect to an existing factory bolt going to the chassis).

To ensure a unique wireless signal between the controller and the receiver (built in the display/beeper):

1. Turn the key or push the start button to the ACC or IGN position.

2. Use a paper clip or similar then press and hold the pairing button found on top of the LCD display (or on the beeper unit).

3. The display will show “—-” and the beeper will emit two beeps. At this point release from pressing the pairing button.

4. If the display shows “CONN”, code matching is successful.

5. If pairing wasn’t successful, please repeat the above process.

1. Functional test: According to the “Usage” section, verify the system powers on, self-checks, and detects normally.

2. Obstacle test: Put simulated obstacles close to each sensor, moving from far to near, and listen to the alarm sound to ensure it is normal.

3. Interference test (Front sensors): Choose a site without obstacles. Get in the car, turn on all lights, hit the throttle several times (7-10 times) in neutral. If the Speaker alarm indicates interference, change the position of the controller and secure it once interference stops.

4. Level optimization: Test drive the vehicle. If false alarms occur on uphill, uneven roads, or speed bumps (possibly due to ground detection), lower the detection level (reduce sensitivity) by one step and retest. If alarms are normal but you want longer detection distance, increase the level (increase sensitivity) by one step and perform a road test. Find the best level through testing.

The speaker power supply is not powered on. Check whether the power cord is connected correctly and tightly.

Possible Causes:

a. Detecting objects within 0.30m from the sensor.

b. The position of the sensor is too close to the ground and the direction is too inclined to the ground.

c. The sensor plug and the extension cord socket, or the extension cord plug and the controller socket are not inserted in place.

d. Ice, snow, and mud stick to the surface of the sensor.

Remedies:

a. If caused by intended objects like spare tires, decorative bars, tow hooks, etc., you may need factory customization of the controller.

b. Reduce the detection sensitivity by reducing the maximum detection distance of the corresponding sensor (adjust settings).

c. Rotate forcefully and insert plugs/sockets fully into place.

d. Clean the surface of the sensor.

Possible Causes:

a. The object with a strong reflective surface on the ground is detected.

b. The sensor sweeps to the smooth ground.

c. There is electrical pulse interference around the controller.

Remedies:

a. If the phenomenon disappears after moving the car, it is normal and there is no need to deal with it.

b. Lower the detection range level to reduce the sensitivity.

c. Change the installation position of the controller, and stay away from the battery and the vehicle cables.

Possible Causes:

a. There is ultrasonic interference near the sensor (e.g., pneumatic tools, grinding machines, knocking sounds).

b. Electrical pulse interference exists around the controller.

Remedies:

a. This is a normal phenomenon caused by external interference signals.

b. Change the installation position of the controller, and stay away from the battery and the vehicle cables.

The volume setting is not appropriate. Reset or adjust the volume using the procedure specific to your unit (LCD or Beeper).

Do not try opening the shell or try to repair the product by yourself. If the product or its accessories have any problems and is still under warranty, then take it back to the place of purchase with the original purchase receipt.

If out of warranty then contact the authorised repair agent, Aerpro Support.

Do not use a chemical substance, cleaning solvent or cleaner to clean the product. Please use a moist soft cloth if you would like to clean the product. Pay attention to cleaning the display surface; use a moist soft cloth to clean the display. Do not use the product under conditions where dust is present.