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| SKU | AI0758 |
| Condition | Used / Inspected |
| Warranty | 30 Days |
| Categories | Industrial Controls, Safety Interlock Switches |
| Ships From | Bardstown, KY |
| Ground | UPS / FedEx |
| Express | Next Day Air Available |
| Freight | Available on Request |
| Cutoff | 2:00 PM EST Mon–Fri |
The STI CM-S221 is a coded magnetic safety interlock switch designed for applications where increased security is required. It features a coded magnetic actuator that cannot be fully operated with a single magnet, making it suitable for interlocked guards where door locking is not required. The switch can approach the actuator from multiple angles and is designed for safety control circuits.
| Specification | Value |
|---|---|
| Brand | STI |
| Model/Part Number | CM-S221 |
| Series | CM Series |
| Switch Type | Coded Magnetic Reed Switch |
| Safety Contacts | 2 N/C + 1 N/O |
| Number of Poles | 3 |
| Contact Rating | 24VDC / 0.3A (Inductive/Resistive) |
| Current Type | DC |
| Operating Distance | ON = 7mm, OFF = 10mm |
| Minimum Gap | 1mm |
| Contact Timing | Close/Drop/Bounce: 3ms/2.1ms/0.7ms |
| Housing Material | Red ABS Plastic |
| Mounting | 2 x M4 screws (supplied) |
| Dimensions (Switch) | 78.0 x 87.5 x 78.0mm |
| Dimensions (Actuator) | 27.2 x 13.5mm |
| Application | Interlocked guards where door locking is not required |
| Certifications | CE, UL, C-UL, EN14119, EN1088 |
We warranty all items for 30 days from date of purchase.
| Brand | STI |
| Manufacturer | STI |
| Model | CM-S221 |
| MPN | CM-S221 |
| Part Number | CM-S221 |
| Condition | Used |
| Weight | 2.00 |
| Current Rating | 0.3 A |
| Current Type | DC |
| Operating Distance | ON = 7mm, OFF = 10mm |
| Mounting Type | 2 x M4 screws |
| Mounting Style | Screw Mount |
| Sensor Type | Coded Magnetic Reed Switch |
| Shelf Location | K-41 |
| Country of Origin | United States |
| Unit Type | Safety Interlock |
| Application | Safety Interlock |
| Features | Coded Magnetic Operation, Safety Rated |
We warranty all items for 30 days from date of purchase. If the item is defective, we will provide a refund or replacement at our discretion.
Items may be returned within 30 days of receipt. Please contact us before shipping any return. Items must be in original condition. Shipping costs are non-refundable.
Orders placed before 2:00 PM EST Monday–Friday typically ship the same day via UPS or FedEx. We also offer Next Day Air and freight options for larger items.
Yes! We actively buy used industrial equipment including robots, motors, drives, PLCs, and more. Contact us at 800-380-4913 or email us for a quote.
