Maintenance teams planning replacements for BANNERENGINEERING-SI-QS90MFD frequently review Banner Photoelectric Sensor, Banner Bannerengineering Stbvr81Q6 and Banner Safety Light Curtain Type 4 S4B to prevent downtime, checking availability and compatibility with existing systems.
Banner SI-QS90MFD Safety Switch
The Banner SI-QS90MFD Safety Switch offers Mechanical - Kit, type, Wiring Chamber connection type. Manufactured by Banner under the Banner Safety Switch category, this model belongs to the SI Series.

| Device Type | Mechanical - Kit |
| Connection Type | Wiring Chamber |
Banner SI-QS90MFD Safety Switch – Technical Specifications
| Specification | Value |
|---|---|
| Device Type | Mechanical - Kit |
| IP Rating | IP65 |
| Primary Housing Material | Thermoplastic |
| Minimum Hinged Door Size (mm) | 50 |
| Min Op. Temperature (°C) | -30 |
| Max Op. Temperature (°C) | 80 |
| Minimum Hinged Door Size (mm) | 50 |
| PL Rating | PL e |
| SIL Rating | SIL CL 3 |
| Actuation | Flexible |
| Output Type | Contacts |
| Connection Type | Wiring Chamber |
| In-Series Diagnostics | No |
| Switch Style | Contact |
| Device Shape | Rectangular |
| Safety Category | Cat 4 |
| SISTEMA | B10d = 2 million |
| Actuator (Safety) Contacts | 2 NC/1 NO |
| Coding Level/Tamper Resistance | Low |
| Mechanical Life (operations in millions) | 1 |
| Auxilliary Output | No |
| Device Size | 90 x 52 x 33 |




