Description
The Cartell CP4 Free Exit System is a professional-grade vehicle detection sensor designed to provide reliable, hands-free free-exit activation for automatic gate systems. Using advanced magnetometer technology, the CP4 detects moving metal vehicles without requiring loops, probes, pressure switches, or above-ground sensing devices.
Designed specifically for gate automation applications, the CP4 delivers dependable exit control by sensing vehicles as they approach the gate from the inside of a secured property. The self-contained underground sensor installs quickly and provides years of maintenance-free operation, making it an ideal solution for residential, commercial, agricultural, and industrial gate installations.
Unlike traditional loop detectors, the CP4 features adjustable sensitivity settings, allowing installers to fine-tune detection performance for a variety of site conditions. The system operates with both AC and DC powered gate operators and is equally suited for solar-powered gate systems.
The rugged weather-resistant sensor is built for long-term underground installation with an IP68-rated enclosure and durable direct-burial cable. With no moving parts and low standby current consumption, the CP4 offers exceptional reliability while reducing installation and maintenance costs.
Key Features
- Professional hard-wired free-exit vehicle detection system
- Advanced magnetometer sensing technology
- Detects moving metal vehicles without loops or pressure switches
- Includes 100 ft direct-burial sensor cable
- Adjustable sensitivity settings
- Compatible with AC, DC, and solar gate operators
- SPDT relay output with N.O. and N.C. contacts
- IP68-rated underground sensor enclosure
- Weather-resistant direct burial installation
- Low standby current consumption
Benefits
- Reliable hands-free gate exit activation
- Eliminates costly loop detector installations
- Reduces false alarms and nuisance activations
- Fast and simple installation
- Works with virtually all automatic gate operators
- Excellent performance in harsh outdoor environments
- Long-term maintenance-free operation
- Adjustable sensitivity for varying site conditions
- Ideal for residential and commercial gate applications
Applications
- Residential driveway gates
- Commercial access gates
- Farm and ranch entrances
- Industrial facilities
- Gated communities
- Private roads
- Storage facilities
- Solar-powered gate systems
Specifications
- Model: CP4
- Manufacturer: Cartell
- Detection Technology: Magnetometer Vehicle Detection
- Cable Length: 100 ft
- Power Requirements: 8–24 VAC or 8–30 VDC
- Standby Current: 30–70 µA max
- Alarm Current: 40–50 mA max
- Relay Type: SPDT Floating Form C
- Relay Contact Rating: 1 Amp @ 24 VDC
- Relay Time: 2–3 Seconds
- Operating Temperature: -25°F to 140°F (-32°C to 60°C)
- Sensor Rating: IP68
- Sensor Diameter: 4.5 in
- Sensor Height: 2.5 in
- Warranty: 3 Years
What's Included
- 1 × Cartell CP4 Vehicle Detection Sensor
- 100 ft Direct-Burial Cable
- Installation Documentation
Ideal For
The Cartell CP4 is ideal for professional installers seeking a dependable, hard-wired free-exit solution for automatic gate systems where reliability, low maintenance, and easy installation are critical.

