© Parallax, Inc. • Reed Switch (#910-27225) • v1.0 5/07 Page 2 of 3
Calibration
Since the reed switch works on magnetic fields it is important to make sure the magnet you use is setup
to properly affect the reed switch and give consistent switching. Magnets are polarized devices so
orientation will affect performance. Please follow the guidelines below to help adjust your setup.
√
Mount the reed switch in the location best suited. The magnet is usually easier to reposition.
√
Determine the optimum distance/orientation of the magnet which opens/closes the reed switch.
Remember, different magnets will give different performance depending on size/type. You can either
glue the magnet to the surface or drill a hole and embed it into the edge of a door/window.
Specifications
Electrical Characteristics
Maximum Switching Power
15W
Maximum Switching Current
1A
Maximum Carrying Current
2.5A
Maximum Switching Voltage
200VDC
Breakdown Voltage
300VDC
Initial Contact Resistance
.1Ω
Module Dimensions
