Carlo Gavazzi FSA2S42MT is an IP67 FS Series magnetic proximity sensor with an M12 × 1 brass housing, normally open reed contact, 2 m PVC cable and switching ratings up to 250 V AC, 3 A and 100 VA.
£53.52
The Carlo Gavazzi FSA2S42MT, also designated FS.A.2/S4/2MT, is a cylindrical magnetic proximity sensor from the FS Series, designed for reliable non-contact position and presence detection in industrial automation equipment. Its reed-contact sensing principle enables operation with a suitable magnetic actuator without requiring physical contact between the sensor and the moving component.
This model features a compact M12 × 1 brass cylindrical housing, a normally open (NO) reed contact and an integral 2 m PVC cable. The sensor supports switching loads up to 250 V AC, 3 A and 100 VA, providing a versatile magnetic switching solution for machinery, positioning systems and industrial control applications.
With an operating distance of up to approximately 12 mm depending on the magnetic actuator used, IP67 protection and an operating temperature range of -25 to +75 °C, the FSA2S42MT provides durable sensing performance in demanding industrial environments.
Magnetic proximity sensors use a magnetic field to operate an internal switching element, allowing the position of a moving component to be detected without direct mechanical contact. In the FSA2S42MT, a normally open reed contact changes state when a suitable magnet enters its operating range, providing a simple and dependable signal for the associated control system.
The M12 × 1 threaded cylindrical format makes the sensor straightforward to mount and mechanically adjust, while the integral 2 m PVC cable provides a ready-to-wire connection. Actual switching distance depends on the magnetic actuator, its orientation and installation conditions, making correct magnet selection important when designing the sensing application.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | FS Series |
| Manufacturer part number | FSA2S42MT |
| Model designation | FS.A.2/S4/2MT |
| Product type | Magnetic proximity sensor |
| Sensor technology | Reed contact |
| Output configuration | Normally open (NO) |
| Switching direction | Front-side switching |
| Housing style | Cylindrical threaded |
| Housing size | M12 × 1 |
| Housing material | Brass |
| Maximum switching voltage | 250 V AC |
| Maximum switching current | 3 A |
| Maximum switching power | 100 VA |
| Operating distance | Magnet dependent, up to approximately 12 mm with specified Carlo Gavazzi magnetic units |
| Electrical connection | PVC cable |
| Cable length | 2 m |
| Protection rating | IP67 |
| Operating temperature | -25 to +75 °C |
| Actuation | External magnetic actuator |
The FSA2S42MT, also identified as FS.A.2/S4/2MT, is an FS Series cylindrical magnetic proximity sensor using a normally open reed contact for non-contact position and presence detection.
The sensor has a normally open (NO) reed-contact output. A suitable magnetic actuator causes the contact to switch when it enters the sensor's operating range.
The FSA2S42MT is specified for a maximum switching voltage of 250 V AC, maximum switching current of 3 A and maximum switching power of 100 VA.
The sensor uses a compact M12 × 1 cylindrical threaded brass housing, allowing convenient mounting and positional adjustment on industrial machinery.
The operating distance depends on the magnetic actuator used and its installation. Carlo Gavazzi FS Series data specifies operating distances up to approximately 12 mm for this sensor with suitable magnetic units.
The sensor is supplied with an integral 2 m PVC cable for connection to the associated machine or control circuit.
The Carlo Gavazzi FSA2S42MT is rated IP67, providing protection suitable for demanding industrial sensing applications.
The specified operating temperature range is -25 to +75 °C.
Carlo Gavazzi sensing products are used by machine builders, system integrators and automation engineers for dependable presence, position and proximity detection across industrial machinery, material-handling equipment and automated control systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...