Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971
×

Activation Distances for R2E Latching Reed Sensors

Actuation distances (latch and un-latch) for the R2E-S bi-stable SMD reed sensor when actuated (as shown in the sketch) with NdFeB standard magnets is shown 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 magnet selection guide.

R2E-S-1 (10-15 AT)

Actuation Sketch Magnet Dimensions Latch/Un-Latch Distance
R2E magnet actuation
NDR-T 4.0 x 1.5 x 1.5 4.0 – 7.0
NDR-S 6.0 x 2.5 x 2.5 9.0 – 15.0
NDR-M 8.0 x 3.0 x 3.0 14.0 – 21.0
NDR-L 19.0 x 4.0 x 4.0 28.0 – 37.0
NDC-T Φ2.0 x 4.0 4.0 – 8.0
NDC-S Φ3.0 x 7.0 13.0 – 19.0
NDC-M Φ4.0 x 10 19.0 – 26.0
NDC-L Φ8.0 x 15.0 38.0 – 48.0