Price range: £229.50 through £330.30 inc VAT
The CAME loop controller series, most notably the SMA (Single Channel) and SMA2 (Dual Channel), are professional-grade inductive vehicle detectors designed for automated gates, barriers, and bollards. They work by monitoring the resonance of a buried wire loop to detect the presence of metal objects, such as vehicles.
| Type of channel | Mono-channel, Bi-channel |
|---|---|
| Documentation | SMA Loop Controller Installation Guide – https://came-cdn.thron.com/static/UA2KTC__FA01686-EN_U8R4R1.pdf?xseo=&response-content-disposition=inlinefilenameCAME-fa01686-en.pdf |
The CAME loop controller series, most notably the SMA (Single Channel) and SMA2 (Dual Channel), are professional-grade inductive vehicle detectors designed for automated gates, barriers, and bollards. They work by monitoring the resonance of a buried wire loop to detect the presence of metal objects, such as vehicles.
| Model | Type | Best For |
| CAME SMA | Single Channel | Standard exit or safety loops at gate/barrier entrances. |
| CAME SMA2 | Dual Channel | Complex installations requiring two separate detection zones (e.g., safety + activation). |
Precision Tuning: Both models feature multi-level sensitivity adjustments (typically 9 levels), allowing you to fine-tune detection so the system ignores small metal objects while reliably catching cars, trucks, or trailers.
Frequency Selection: Multiple selectable operating frequencies allow you to install adjacent loops without signal interference (cross-talk).
Advanced Logic: Includes features like:
Automatic Sensitivity Boost (ASB): Helps detect high-bed vehicles or those with drawbars.
Time Functions: Supports switch-on/off delays and “presence” modes where the signal stays active as long as the vehicle is over the loop.
Ease of Installation: DIN rail mounting makes them standard for control cabinet integration. They feature clear LCD displays and configuration buttons for quick setup.
Fail-Safe/Fail-Secure: Options available to ensure your gate remains secure or opens automatically in the event of a power failure or loop fault.
Inductive Loop: A copper wire is installed beneath the road surface (usually in a rectangular “saw-cut” or buried in a pipe/duct).
Magnetic Field: The CAME controller sends electricity through the loop, creating a localized magnetic field.
Detection: When a large metal object (your vehicle) enters this field, it changes the inductance (the “resonant frequency”) of the loop.
Signal: The controller senses this change and triggers a relay, sending a signal to your gate’s control board to either open the gate or hold it open for safety.
