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Operate and release distances for the R2B Normally closed reed sensor in the two standard AT bands when actuated with NdFeB standard magnets are listed below. All distances given are in mm, with tolerances of ±0.5mm. Although some of the AT band / magnet combinations will produce similar actuating distances, selecting the right AT band and magnet for an application is important and can be done by going through our AT band FAQ and our magnet selection guide.
Actuation Distances for R2B-S Gull-wing SMD
Release Band 10-15 (AT)
| Magnet | Dimensions | Release Distance | Operate Distance | Re-Closure |
| NDR-T | 4.0 x 1.5 x 1.5 | 2.0 – 4.0 | 2.5 – 4.5 | < 0.5 |
| NDR-S | 6.0 x 2.5 x 2.5 | 6.5 – 9.0 | 7.0 – 10.0 | < 3.0 |
| NDR-M | 8.0 x 3.0 x 3.0 | 9.5 – 12.5 | 10.0 – 13.5 | < 4.5 |
| NDR-I | 12.0 x 3.5 x 3.5 | |||
| NDR-L | 19.0 x 4.0 x 4.0 | 17.0 – 21.5 | 18.0 – 23.0 | < 7.0 |
| NDC-T | Ø2.0 x 4.0 | 2.5 – 5.0 | 3.0 – 5.5 | < 1.0 |
| NDC-S | Ø3.0 x 7.0 | 8.0 – 10.5 | 9.0 – 11.0 | < 3.5 |
| NDC-M | Ø4.0 x 10.0 | 12.0 – 16.0 | 13.0 – 17.0 | < 5.0 |
| NDC-I | Ø6.0 x 12.0 | |||
| NDC-L | Ø8.0 x 15.0 | 26.0 – 32.0 | 27.0 – 33.0 | < 12.0 |
Release Band 15-20 (AT)
| Magnet | Dimensions | Release Distance | Operate Distance | Re-Closure |
| NDR-T | 4.0 x 1.5 x 1.5 | 1.5 – 2.5 | 2.0 – 3.0 | < 0.5 |
| NDR-S | 6.0 x 2.5 x 2.5 | 5.0 – 7.0 | 5.5 – 8.0 | < 2.5 |
| NDR-M | 8.0 x 3.0 x 3.0 | 8.0 – 10.0 | 8.5 – 11.0 | < 4.0 |
| NDR-I | 12.0 x 3.5 x 3.5 | |||
| NDR-L | 19.0 x 4.0 x 4.0 | 14.5 – 18.0 | 15.0 – 19.0 | < 6.0 |
| NDC-T | Ø2.0 x 4.0 | 2.0 – 3.0 | 2.5 – 3.5 | < 1.0 |
| NDC-S | Ø3.0 x 7.0 | 6.5 – 8.5 | 7.0 – 9.5 | < 3.0 |
| NDC-M | Ø4.0 x 10.0 | 10.0 – 12.5 | 10.5 – 14.0 | < 5.0 |
| NDC-I | Ø6.0 x 12.0 | |||
| NDC-L | Ø8.0 x 15.0 | 22.5 – 26.5 | 22.5 – 28.5 | < 10.0 |
