The 2 channel SMA sensor is a vehicle detector using electromagnetic loops. It is fitted with a microprocessor and has been designed for access and traffic flow controls. The operating principle involves measuring the inductance variation in the magnetic loop caused when a vehicle passes over it. The SMA sensor comes complete with an 11 pin support/terminal block for connection to the loops and the 12 or 14V ac/dc power supply.

Product Specification:

• 2 Channel
• Supply voltage: 12/24V ac/dc
• Current draw: 20mA max
• Outlet relays: Max capacity: 5A at 230Vac - Exchange contact
• Magnetic loop inductance: between 20 and 1000 µH