Why Choose the EMAS SMS31LC2-S15 Magnetic Door Switch?
The EMAS SMS31LC2-S15 is a compact 22 mm rectangular magnetic door switch designed for contactless monitoring of machine guards, protective doors and industrial access points. Part of the EMAS SM Series, this model features a plastic housing, left-side exit, 2NC + 1NO contact configuration and a 5 mm sensing distance.
The SMS31LC2-S15 incorporates an integrated LED indicator for convenient local status indication. Its coded, contactless magnetic triggering principle avoids mechanical engagement between the switch and actuator, helping minimise mechanical wear on frequently operated hinged, sliding and removable guards.
Supplied with a 2 m pre-wired cable containing 6 × 0.25 mm² conductors, the SMS31LC2-S15 is ready for integration into compatible machine monitoring circuits. EMAS specifies an IP68 protection rating and an operating temperature range of -25°C to +70°C, supporting use in demanding industrial environments.
Key Advantages
- 2NC + 1NO contact configuration provides three switching contacts for compatible monitoring circuits.
- 5 mm sensing distance for reliable contactless guard-position detection.
- Integrated LED status indication assists commissioning and operational checks.
- Left-side cable exit provides a defined wiring orientation for machinery layouts.
- 2 m pre-wired cable supports straightforward installation.
- Compact 22 mm rectangular format suits space-conscious machine installations.
- IP68 protection rating supports use in demanding industrial environments.
- Contactless operation eliminates mechanical engagement between the switch and actuator.
Key Features
- EMAS SM Series magnetic door switch.
- 22 mm nominal rectangular format.
- Plastic body construction.
- Left-exit configuration.
- 2NC + 1NO contacts.
- 5 mm sensing distance.
- Integrated LED indicator.
- 2 m cable connection.
- 6 × 0.25 mm² cable conductors.
- IP68 protection rating.
- -25°C to +70°C operating temperature.
- Contactless magnetic triggering with a coded actuator.
- Designed to resist dirt and dust.
Contactless Coded Magnetic Guard Monitoring
The EMAS SM Series uses a contactless magnetic operating principle in which the switch is installed on the fixed machine structure and the corresponding coded actuator is fitted to the movable guard or door. As the actuator enters the specified sensing zone, the magnetic switch changes the state of its contacts, enabling the connected monitoring system to determine whether the guard is in the required position without mechanical engagement between the components.
The SMS31LC2-S15 combines 2NC + 1NO contacts with a 5 mm sensing distance and LED indication. Its left-exit 2 m cable, compact 22 mm format and IP68 protection make it a practical option for industrial machinery requiring a durable contactless door or guard-position sensing solution.
Typical Applications
- Industrial machine-guard monitoring.
- Protective door position detection.
- Hinged and sliding machine guards.
- Packaging and processing machinery.
- Automated assembly equipment.
- Robotic and automated production cells.
- Conveyor and material handling machinery.
- Protective enclosures and access panels.
