Introduction
The Cartell CP-4 Smart Driveway Free Exit Wand Sensor System is designed to provide a reliable and convenient solution for automatic gate openers, allowing vehicles to exit a property without requiring a remote or keypad. This self-contained system is a direct replacement for the CP-3 model, offering enhanced features and improved performance.
Key Features:
- Direct replacement for CP-3 with added features.
- Self-contained system for easy integration.
- Connects directly to any gate opener system without an external output board.
- Compatible with solar-powered gates.
- Conduit-ready housing for protected installation.
- Adjustable sensitivity for optimal performance.
- Improved heat resistance and lightning protection.
- New proven digital circuit for reliable operation.
- Weather-resistant cable with industry-standard wire colors.
- Universal voltage AC & DC compatibility.
- Works with all gate operators.
Product Overview
The Cartell CP-4 system consists of a sensor unit (often referred to as a 'puck') with an integrated cable, designed for burial to detect the presence of vehicles.
Components:
- CP-4 Sensor Unit (Puck)
- Integrated 100-foot Cable

Image: The Cartell CP-4 sensor unit, a black rectangular device, with its coiled 100-foot cable. The cable has multiple colored wires at its end for connection.
Installation
Proper installation is crucial for the optimal performance and longevity of your Cartell CP-4 system. It is highly recommended to run the cable in conduit to protect it and facilitate future maintenance or replacement.

Image: A diagram illustrating the installation steps for the Cartell CP-4, including serial number location, trenching, conduit use, wiring connections, sensitivity adjustment, and burial depth.
Step-by-Step Installation:
1. Serial Number
Locate the serial number on the bottom of the 'puck' unit and on the product box. This number is handy for product inquiries and support.
2. Trenching Pipe & Cable
Trench 1/2" PVC pipe beside the driveway where the CP-4 will be buried. The trench should be deep enough to allow for 3-5 inches of cover over the buried unit. Note: Warranty may be voided if the cable is not run in conduit.
3. Conduit & Slip Joint
After pulling the cable through the plastic conduit, insert the conduit inside the slip joint on the 'puck'. Do NOT glue the slip joint to allow for easy un-installation if needed.
4. Connect to Gate
The CP-4 works with all gate operators (powered or solar). Connect wires as follows:
Wire Color Function (Power Gates) Function (Solar Gates) Red Power + Power + Black Common - Ground or Common White Exit N.O. Free Exit or Open Terminal Blue Exit N.C. N/A Yellow Exit N.C. N/A The system supports universal voltage AC & DC (8-24 VAC or 8-30 VDC).
5. Test Sensitivity
In most cases, sensitivity will NOT need to be adjusted as it is set to high from the factory. However, if adjustment is needed, use the DIP switches inside the unit:
- HIGH (Default): Detects vehicles 12-14 feet. DIP switches 1 & 2 are in OFF position.
- MEDIUM: Detects vehicles 5-6 feet. DIP switch 1 is ON, 2 is OFF.
- LOW: Detects vehicles 2-3 feet. DIP switch 1 is OFF, 2 is ON.
Note: DIP switch color may vary.
6. Bury Conduit & "Puck"
Test the unit with the gate by driving a steel vehicle over the 'puck' (or driving vehicle by). If it opens the gate correctly, finish installation by burying the conduit and 'puck' 3-5 inches below the surface.
Other Installation Considerations:
- The CP-4 may be installed above ground by screwing the 'puck' directly to a post or building. If above ground, ensure the puck is immovable to eliminate false alarms.
- If installed above ground, conduit is required to mechanically protect the cable (animals will eat it).
- Install CP-4 at least:
- 6-10 feet away from buried power, telephone, or invisible dog fence.
- 10 feet away from natural gas lines.
- 20 feet away from power pole with a transformer.
- 100 feet back from railroad traffic.
- 200 feet away from high power substation power lines.
- 80-100 feet back from gate operator.
Operation
The Cartell CP-4 system operates by detecting magnetic disturbances caused by moving steel vehicles. When a vehicle passes the sensor, a signal is sent to your gate operator, triggering the gate to open for free exit.

Image: A black SUV approaching a closed ornate metal gate with stone pillars, illustrating the scenario where the sensor would activate.

Image: The same black SUV passing through the now open ornate metal gate, demonstrating the system's function.
How the System Works:

Image: A diagram with the number '1' indicating 'A Car Enters or Leaves a Driveway'. Our vehicle detection systems sense magnetic disturbance when a vehicle passes the sensor traveling at least five MPH.

Image: A diagram with the number '2' indicating 'A Signal is Sent'. Once a car is detected, an activity notification is sent either wirelessly or through wires to an existing security/home automation system, a Cartell control unit, or to a gate operator for free exit.

Image: A diagram with the number '3' indicating 'Alerts are Activated'. Cartell systems can activate audible alerts, trigger cameras and lights, integrate with components of a security/home automation system, or automatically open a driveway gate for free exit.

Image: A diagram with an icon of a deer and leaves, indicating 'No False Alarms'. No person, animal, or blowing leaf will trigger our system. We only detect moving steel. If your Cartell system is activated, you can be sure there's a vehicle in your driveway.

Image: A diagram with a bell icon, indicating 'Reliable Alerts'. Whether you're using your system to send a signal to your smart home, turn on lights, activate alarms, or open your gate for free exit, you can trust your property to Cartell.
Maintenance
The Cartell CP-4 system is designed for minimal maintenance. However, periodic checks can ensure continued reliable operation:
- Inspect Cable: Periodically check the exposed portions of the cable for any signs of damage, especially if not run through conduit.
- Clear Area: Ensure the area directly above the buried sensor is clear of large metal objects or debris that could interfere with detection.
- Connection Integrity: Verify that all wire connections to the gate operator are secure and free from corrosion.
- Conduit Protection: If the unit needs replacement in the future, having the cable run through conduit will significantly simplify the process, as you can often fish a new wire through the existing conduit without re-trenching.
Troubleshooting
If you encounter issues with your Cartell CP-4 system, consider the following common problems and solutions:
- System Not Detecting Vehicles:
- Check the sensitivity setting (DIP switches). It might be set too low for your vehicle type or installation depth.
- Verify that the vehicle is made of steel and is moving at least 5 MPH when passing the sensor.
- Ensure the sensor is buried at the correct depth (3-5 inches).
- Inspect the cable for any damage or breaks, especially if not in conduit.
- Gate Not Opening After Detection:
- Confirm all wiring connections to the gate operator are correct and secure (Red, Black, White, Blue/Yellow).
- Check the power supply to the CP-4 unit (8-24 VAC or 8-30 VDC).
- Ensure the gate operator itself is functioning correctly and is receiving the signal from the CP-4.
- False Triggers:
- Adjust the sensitivity setting to a lower level.
- Ensure there are no large, moving metal objects (e.g., metal trash cans, tools) near the sensor's detection zone.
- Verify the sensor is installed at the recommended distances from power lines, transformers, and other potential interference sources.
- Unit Failure (e.g., due to moisture):
- While the unit is designed to be weather-resistant, ensure proper sealing and installation, especially if not using conduit.
- If you suspect internal damage or moisture ingress, contact Cartell customer support for assistance. They may require detailed meter readings for diagnosis.
Technical Specifications

Image: A document detailing other installation instructions, technical specifications, and return merchandise information for the Cartell CP-4.
| Specification | Value |
|---|---|
| Power Required | 8-24 VAC or 8-30 VDC |
| Stand-By Current | 30-70 Microamps (µA) |
| Alarm Current | 30-40 Milliamps (mA) |
| Relay Time | 2-3 seconds |
| Relay Contacts | SPDT, Floating, N.O. or N.C. (Form C) |
| Relay Contact Rating | 1 amp/24 VDC (1 mA at 5 VDC min. load) |
| Enclosure Rating | IP67 |
| Strength Rating | 9.53 lbf-force, 8646 kgf |
| Temperature Range | -25°F - +140°F (-32°C - 60°C) |
| Dimensions | 4.5 in. Dia. x 2.5 in. high |
| Weight | 4.4 pounds (with 100 ft. cable) |
| Manufacturer | CARTELL |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Date First Available | October 31, 2019 |
Warranty and Support

Image: A document detailing the 5-year warranty, return merchandise instructions, and various contact information for Cartell.
5 Year Warranty:
All Cartell products are warranted against defects in material and workmanship for five years. This warranty does not cover defects caused by, but not limited to: acts of God, improper installation, abuse, fire damage, electrical surges, and damage to cable caused by slicing, pulling, tangling, improper splicing or not running in non-metallic conduit.
Returning Merchandise:
Consumer: Contact your installer.
Installer: Call BEFORE DIGGING UP. Call (717) 532-0033, option 1 to troubleshoot and receive a Return Merchandise Authorization (R.M.A.) number. Write the R.M.A. number on the return shipping box and any correspondence included with the defective product.
Distributor: Send installers directly to Cartell, using (717) 532-0033, option 1 as the phone number.
Contact Information:
| Department | Contact Detail |
|---|---|
| Tech Support | 717-532-0033, option 1 |
| RMA's | 717-532-0033, option 1 |
| Shipping | 717-532-0033, option 2 |
| Accounting | 717-532-0033, option 3 |
| info@cartell.com | |
| Ordering (Distributors only) | orders@cartell.com |
| Address | 510 West King Street, Shippensburg, PA 17257 |
| Website | www.cartell.com |





